Arc'teryx Atom LT Hoody - Men's

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Description

You can count on the Arcteryx Men's Atom LT Hoody for lightweight, wind beating insulation. Weather resistant and breathable, this synthetic puffy jacket is a great standalone piece in fair weather or as a layering piece in cold, stormy conditions. The synthetic Coreloft™ insulation has a high warmth-to-weight ratio and is very compressible for easy packing. The Atom LT Hoody delivers all-weather warmth and easy-care versatility. The side panels and underarms use Polartec® Power Stretch with Hardface Technology. These panels add increased breathability and enhance the jacket's ability to move with your body. Arcteryx includes stretch-knit cuffs keep to keep out the cold and insulates the hood for the ultimate in storm protection. Fire up your mountain stoke with the Arcteryx Men's Atom LT Hoody.

Specifications

  • Fabric: Luminara™ stretch nylon ripstop fabric with wind and water resistant, air permeable PU coating and DWR (Durable Water Repellent) finish
  • Side panels: Polartec® Power Stretch® with Hardface® Technology
  • Insulation: 60 gm/sq m Coreloft™
  • Moisture-resistant outer face fabric with DWR finish (Durable Water Repellent) helps bead water from fabric surface
  • Breathable
  • Insulated
  • Lightweight, compressible and packable
  • Wind resistant
  • Articulated elbows
  • Gusseted underarms
  • Insulated hood
  • Insulated scuba hood fits under helmet
  • Internal chest pocket
  • Two hand pockets
  • Full front zip with wind flap
  • Stretch-knit cuffs
  • Drop back hem
  • Laminated hem
  • Adjustable hem drawcord
  • Fit: Athletic fit, hip length
  • Recommended for: All-Around Ski, Touring Ski-Snowboard
  • Weight: 12.9 oz

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Review Summary

4.8 out of 5

60 Reviews

Pros
  • Great value: 6
  • Lasts forever: 5
  • Great design: 34
  • Build quality: 32

Cons
  • Cost: 9
  • Bad design: 1
  • love to see a locking zipper: 1
  • Low performance: 1
Comfort: 5 / 5
Quality: 4.9 / 5
Durability: 4.3 / 5
Warmth: 4 / 5
Fit: 3 / 5

60 Ratings & Reviews

Jukeboxe
from Montreal, Qc, Canada

Very good value at a good price
August 04, 2013

One of my best purchase ever. Warm and fit perfectly. For hicking can be wear alone or as a mid layer. I recommend 100%. Just note is fit and can be tight.

Pros: Build quality, Ease of use, Great value
Comfort: 5 / 5
Durability: 3 / 5
Quality: 4 / 5
FitClothes: 2 / 5
Warmth: 4 / 5
Super78
from Montana
25-34 yrs

Super Comfy
September 27, 2012

This jacket is amazingly confortable. I have an Atom vest that I've worn for years and the jacket is now my new favorite. the design is perfect for placing under a shell when the conditions get nasty and a good stand alone jacket when things are cool out. The wind doesnt cut through; however, the material is not the most bombproof and will get damaged if snagged on something like a sharp tree branch. Overall, I love this jacket and wear it almost everywhere. I also count on it as a midlayer for skiing, ice-climbing, and winter flyfishing. As far as fit goes, the hood appears to be designed for a helmet but fits nicely when wearing a hat. I am 6' 2", 220 lbs and the XL fits nicely. Furthermore, it is not a "puffy" jacket and as a result layers really nicely with vests or outer shells.

Pros: Great design, Performance, Ease of use, comfortable
Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Jukeboxe
from Montreal, Qc, Canada
25-34 yrs

Very good value at a good price
August 04, 2013

One of my best purchase ever. Warm and fit perfectly. For hicking can be wear alone or as a mid layer. I recommend 100%. Just note is fit and can be tight.

Pros: Great design
FANS
top10Contributor

Everyone is going to love this Hoody
January 04, 2011

This jacket is amazing. I am super excited to wear this jacket this winter. I normally wear a Large in Arxteryx.In the Atom I went up a size to an XL. The large when I tried it on fit but was super slim and wanted room to wear a small layer under it. When I tried the Xl it was still slim but gave me room to fit something under it.

RYORYO

very light
November 03, 2010

It was good to buy it because the design of the jacket was very good Because I am light, I wear this jacket very much and am comfortable

Best Jacket I Have Ever Bought
November 30, 2009

I just received this jacket about a week ago and I don't think I have taken it off since! I spent a lot of time searching for a jacket that would fit me without making me look like the Michelin man. At 6'6" I bought an extra-large and found that it was prefect; just long enough, not too poofy, with a great tailored fit. One of the more amazing things about this jacket is how light it is, I was happily surprised while I remained nice and warm on a two day camping trip. I don't think I could have found a better jacket. I would highly recommend it to anyone looking for a high quality jacket, with good styling and great warmth!

gsx115
top500Contributor

from Playa Del Rey, CA

Best jacket ever
April 12, 2011

Very well designed and comfortable. lasted me through some very rough trips. The jacket is very well designed and compact. Keeps you warm. Im glad that the this jacket was available at Altrec.

wendy1
top1Contributor

November 02, 2010

It 's lighter than I thought, I think it is suitable inside hardshell for warm, but it 's not warmer than Down jacket as for me and not very well in windproof. Its most appealing advantage is its weight, absolutely light.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
Kou1004
25-34 yrs

Good gear!!
March 02, 2012

Very high quality!! And warmer than I think. Every pocket have zip,It is very good!! Body is so soft, good touch feel. I bought Large size,a little small. This gear is tight shape,but very confortable.

Comfort: 5 / 5
Durability: 5 / 5
FitClothes: 4 / 5
Warmth: 4 / 5
OTC9963
from New York, NY
35-44 yrs

Warm jacket but not heavy
July 15, 2012

I got this jacket in the beginning of this year. It is very warm and light. You can put it in you backpack and it won't occupy too much space. I wore it couple times in light rain and it did pretty good. In addition, If the weather is too cold, you just have to wear one fleece inside to keep you warm. I really recommend this jacket.

Pros: Great design, Build quality, Performance, Ease of use, Great value
Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Warmth: 5 / 5
threetoe
Over 65 yrs

Awesome Atom Lt.
February 26, 2013

Read the reviews. This jacket is awesome. I’m not going to give you all the details. You will find them in the glowing reviews. I’m up to my eyeballs in Arcteryx & Mammut jackets because they are the best quality. The Atom lt. is my all time favorite for mid level & stand alone. It is incredibly warm and light and looks outstanding. Hate to admit it but I bought 3 when I heard Arcteryx was going to stop making it after this year. Even if that turns out to not be true, I will still have this item in my quiver for years.

Pros: Great design, Build quality, Lasts forever, Performance, Ease of use
Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
Warmth: 4 / 5
TheChurchIsTrue
top100Contributor

from Santaquin, Utah

Light yet warm
December 23, 2012

When I first got this jacket jacket I didnt think it would be warm enough for what I needed it for. Boy was I wrong. It is extremely warm, much warmer than I thought it was going to be. The other nice thing is how fast I warmed up after putting it on. Its almost instant warmth. The jacket has a really snug fit which I think adds to the speed at which you begin to warm up. Some other jackets from other brands Ive tried fit looser, and as a result, I took longer to warm up and didnt seem quite as warm. I was also a little suspect of the outer fabric; it seemed too thin to be able to be durable. It is more durable and also more stretchy than I expected. I still think one needs to be careful if using this jacket continously as an outer layer. I also wanted to add my two cents about the Coreloft insulation versus primaloft one insulation. While I dont think Coreloft is warmer than Primaloft, I think it is about AS warm. I expected it to be noticely less warm than Primaloft, but it absolutely holds it own. Overall one of my most useful and versatile jacket.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 2 / 5
heyyo

Nice and light but warm
September 23, 2013

Men's Atom LT Hoody seems to be well designed and constructed. It's lighter than it looks and warmer too. It fits a bit snugger than most but that will work well when using it as a mid layer under a shell. The sleeves and hem fit under a shell without bunching up too much. I was worried that the soft outer material might snag and tear easily but it's stronger than I thought. It might still snag if you go crashing through brambles and broken sticks, but it's stronger than some of the other outer material I've had.

Pros: Great design, Build quality, Performance
CafeSuDa
top1000Contributor

from Los Angeles, CA

Awesome 3 season everywhere companion
August 18, 2011

The Arc'teryx Atom LT Hoody is the perfect jacket for the spring, fall, and winter seasons. It's lightly insulated with PrimaLoft and there are 2 panels of Polartec Power Stretch, on the left and right, to help breathability if cardio kicks up a bit. When the weather is chilly but Father Winter hasn't quite made his presence felt, it's a great piece of light outerwear that'll keep you warm and comfy on it's own with a t-shirt underneath. Then when things start to get really cold, it can perform as the perfect mid-layer! The fit is definitely athletic. I'm 5'9" 145lbs athletic and I wear a medium ... It's a perfect fit! Small definitely would be cutting into my pits and large would leave too much space everywhere. The hood has more of a form fitting fit to seal in the warmth without being constricting. If you've ever tried on the non-hoody version, the fit is exactly the same as that. Love, love love this jacket! ... So much so that I even have the non-hoody and vest versions =)

nice light jacket
December 13, 2009

This is a good looking jacket but it is not as well insulated as the photo makes it appear. I am surprised by the other reviews saying it is good for freezing weather, it's much too light for that. I would say it's good for fall and spring with temps down to about 40'.

hitalan
top25Contributor

Good insulate jacket
October 26, 2010

It is light and good fit. Hoody is useful in windy day. It is a little thin. Primaloft does work.

Amazing
February 16, 2010

I can't say enough good things about this jacket. It is warm enough for well below freezing temps and is incredibly light and packable. The fleece side panels really help this jacket breathe when you are working hard. I usually don't buy arc'teryx products unless they are on sale, but this one I paid full price for and it was well worth it.

TheChurchIsTrue
top100Contributor

from Santaquin, Utah
25-34 yrs

Light yet warm
December 23, 2012

When I first got this jacket jacket I didnt think it would be warm enough for what I needed it for. Boy was I wrong. It is extremely warm, much warmer than I thought it was going to be. The other nice thing is how fast I warmed up after putting it on. Its almost instant warmth. The jacket has a really snug fit which I think adds to the speed at which you begin to warm up. Some other jackets from other brands Ive tried fit looser, and as a result, I took longer to warm up and didnt seem quite as warm. I was also a little suspect of the outer fabric; it seemed too thin to be able to be durable. It is more durable and also more stretchy than I expected. I still think one needs to be careful if using this jacket continously as an outer layer. I also wanted to add my two cents about the Coreloft insulation versus primaloft one insulation. While I dont think Coreloft is warmer than Primaloft, I think it is about AS warm. I expected it to be noticely less warm than Primaloft, but it absolutely holds it own. Overall one of my most useful and versatile jacket.

Pros: Great design, Build quality, Performance, Ease of use, Cons: Cost

Good jacket, great fit
October 19, 2009

Another great piece from Arc'teryx, just wish it was slightly warmer. Overall, very pleased.

sweetheart
top50Contributor

from New York, NY

superlight superwarm
November 03, 2010

this guy features superlight superwarm? the size fits well, highly recommended

Comfortable and functionally warm
October 27, 2009

My son is very particular about comfort and fit. so pleased he will now be warm and dry walking on campus.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
DylanM
top1000Contributor

from Poconos, PA
25-34 yrs

This Jacket is was great at first, but
November 03, 2011

I purchased this jacket a while back and I thought it was great at the time, but that changed over time. It was comfortable and fit well. I am 5'10 175 and purchased a large. I found the jacket to be extremely light. I did not find the jacket to be nearly as warm as some of the other reviewers. My main problem was the hood has no drawstring or a way of making it tighter on your head. Another problem was the jacket is extremely noisy. Everywhere I went I couldn't even here myself think (just joking) but it is noisy.

Pros: Great design, Build quality, Performance, Ease of use, looks good, Cons: Cost
Everest
top250Contributor

very warm
May 22, 2011

This is a very comfortable and nice-looking jacket. Once you put it on you feel the warmth immediately, unlike some fleece jacket. I think it provides me at least same warmth as North Face Denali polartec 300 fleece but much much lighter and much more comfortable. I am glad I made the purchase. I also bought the Atom SV hoody in the same time and feel this is almost as warm as atom SV because SV is more spacious unlike LT is very snug and hold your body like glove.

TheLeazes
from Denver, Colorado

Light weight warmth
November 07, 2010

I was a little dubious about the warmth of this jacket when I received it as it is very thin and light-weight but it works very well for my purposes. Great as either an outer layer or layered under a shell for hiking and snow-shoeing in the Colorado mountains. I also own a North Face Nuptse down jacket and whilst this jacket is not as warm as a heavy fill down, it has advantages over down for aerobic activities as it doesn't cause you to overheat as much and maintains warmth and comfort better when sweating. Also allows layering under a shell unlike more bulky down. One thing I would change would be to add a cinch cord around the hood which is very loose fitting and lets in the wind. The elasticated cuffs are great though, form an air-tight seal which is very comfortable and works great with gloves. In short great for layering and cold weather aerobic activities, for more sedantary activities I would go with goose-down.

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Warmth: 3 / 5
LostInUtah
top1000Contributor

from SLC
55-64 yrs

Sweet Mid-Weight!
December 19, 2011

I finally broke down and bought an Arc'teryx Atom LT Hoody for use in my fall and winter outdoor pursuits, I am 5'10" and weight 165 lbs. and found the the medium fits perfectly...I would absolutely swim in the large. The color I purchased is called squid ink which is more purple than blue. I primarily purchased for a mid-layer, but it is perfect as an outside shell for cool days around town. Some of the key features that I like are the stretch underarm panels, the close fitting spandex wrist cuffs, the low back, and the very effective waist/hip draw cord. The piece is super compressible, and takes up almost no room in your pack during trips in the backcountry. It will always go with me. We recently had a string of days at the mountain where daytime temps hovered around 0*F and with a base layer, the Atom LT Hoody, and a shell jacket provided the perfect combination - comfortable not cool or hot.

Pros: Great design, Build quality, Performance, Cons: love to see a locking zipper
Comfort: 4 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
raymondo

Maybe not as warm as i thought it would be
February 15, 2012

Am using it for a California winter. Nice fit and looks great. Not as warm as I was hoping for it to be, but can be stuffed into a small package. Waited for the Dark Dust version. Looks like a pastel dark blue. Am going skiing in 2 weeks and will use it then. So will try to update then on the warmth factor.

Pros: Great design, Build quality, Cons: not sure exactly how warm it is
dayman
from eugene, or

All I hoped for
June 30, 2011

Hello, recently got the atom hoody, in deep dusk which seems black until you get it into the sunlight then it seems very dark blue, cool color. 6'1 170 went with medium, fits slim but no movement is restricted and not tight. a large would probably be too big (on me) as the tail drops down quite a bit. the fit is great, have a nano hoody and this feels much stronger and fits better. the hood fits bigger than i thought and should have a draw cord. this has been great as a stand alone in cooler temps and when the heavy rain or cold weather comes throw a shell over (which anything slides easily over and under this). THis is my new favorite piece that will always be in the pack. The strech panels are like someone read my mind. GET IT before they change it.

Bulldogmtman

Climber friendly
November 26, 2009

Bought this jacket to be worn on technical rock and alpine pushes. So far it has excelled greatly (mostly rock) in the cold and wind. I have 10 days of freezing and below climbing. I wore it every time, no complaints. I am 5'10 and 180, I purchased a large. Fits perfect. The cuffs are my favorite, must try on!!

Yuong
top10Contributor

Light and warm!
April 29, 2010

It is super breathable along the sides and the hood makes it extra cozy . It is great for wearing over fleece because of the slick inside fabric.The Atom could be my new favorite jacket from Arc'teryx!

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5

45-54 yrs

Incredibly Versatile
April 05, 2012

This jacket has become my favorite piece of winter clothing in a few short months. Hiking, skiing, and simply wearing it to work, it does exactly what it is supposed to do. The jacket itself is uber light and extremely comfortable. The side vents do what they are supposed to , especially when being athletic, and the insulation keeps you snug but not too hot. The hood is a bonus and fits easily under my ski helmet or my hard shell. It seems to layer effortlessly during colder days, but is also a great "throw on" for everyday use. My biggest issue with other insulated layers is the pinching and bunching you get under the arms. Arc'teryx has solved this problem. It does not hinder movement at all or cause any discomfort. All in all, I highly recommend this jacket!

Pros: Great design, Build quality, Performance, Ease of use
Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Warmth: 4 / 5
Radtheory
top250Contributor

from BEAVERTON, OR
25-34 yrs

GREAT light and warm jacket
December 18, 2010

I love this jacket. this jacket is so light and warm that I almost wear this jacket to work everyday. I gets many compliments, so the design is also good. if you are looking for light and warm jacket, this is it!

Pros: Great design, Build quality, Performance, Ease of use, Great value
DylanM
top1000Contributor

Atom LT Hooded Insulated Jacket Rocks
December 07, 2010

Lets just get it out there, this jacket rocks. It is super light weight but is still super toasty. It doesn't have pit zips but the fleece that makes up the side of the jacket and armpits help vent moisture and excess heat. The material on the out side is surprisingly water proof as well.

Leigh12
top250Contributor

Lightweight
December 22, 2009

Amazingly light weight which makes it so comfortable and wearable

JYD11
top50Contributor

Better synthetics out there!
July 24, 2010

Not a huge fan of this jacket. The different materials in the side panels make it less compressible than other synthetics and the zipper wouldn't stay closed when zipped up all the way. Not one of Arc'Teryx better products!

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
wangl

I love this Hoody
November 15, 2010

A non-fleece insulation piece from Arc'teryx for under $200. That can't be right!?! But it is. This insulated hoody has become my favorite everyday do everything cool weather Jacket. It packs down super small for instant on hand insulation. It also has proved to be a killer mid-layer, as the fabric slides well and does not seem to bind the way fleece can under a shell. I even find that when worn as a mid-layer the hood forms a really comfortable gasket on the back of the neck keeping cold air from creeping in. All in all, the Atom could be my new favorite jacket from Arc'teryx!

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 3 / 5
MTtrailrunner

Supreme midlayer
March 20, 2013

These is one of those pieces we can all use: decently weatherproof outer layer in coolish conditions, and warm/cozy midlayer when things get uber wet or cold. I've used this piece for everything from snowshoeing and hiking in moderate cold to trail running in the very cold. Hood has no adjustments but fits surprisingly well, and when hood not in use it makes a plush neck gaiter. Little details like the free flowing zippers and the light fleece on the handwarmer pockets make this even more special. Warmth to weight ratio is excellent, especially for a synthetic, and outer shell holds its own in most weather you'll face out and about town. Fit and finish top notch.

Pros: Great design, Build quality, Performance, Ease of use
GearHead2
top100Contributor

Ideal Insulated Shell!
September 25, 2010

A versatile jacket that will keep you warm and dry in the backcountry. Incredibly light and water resistant, throw it in your pack just in case the weather takes a turn on you.

will88
from park city, utah

ultra light warmth
November 11, 2010

I already have the atom LT but wanted a hoody and couldn't find a better one than this. While it will make a great mid layer for the cold weather ahead, I am using it this Fall as my primary outerwear for playing golf on chilly mornings. I like the range of motion that the design and underarm fabric allows. One of my favorite jackets!

Comfort: 5 / 5
Durability: 2 / 5
Quality: 4 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
Dan888

Atom LT Hoody
May 21, 2012

The Arcteryx Atom LT Hoody is my first item from the company. I'm impressed with its warmth and light weight. Used it as a light weight mid-layer under a GTX shell jacket, it provides the best insulation without over-heating while out in the snow. I especially like the DWR and stretchable cuffs. Some say the elastic hood needs a draw cord but I disagree. The elastic hood makes putting it on and off a breeze. The fit is perfect for me. I'm 175cm 60kgs and wear a men's medium. Also, wore it as the top layer in light snow conditions and it was perfect too. While settling down to sleep in the tent (snowing outside), the LT was a bit light. I had to put on a down vest. Think I'll be getting the Atom SV soon.... One last thing, the face fabric is pretty soft. If you're bushwalking, make sure you wear a shell over it or else it'll be torn. Love the light weight and warmth!

Pros: Great design, Build quality, Performance, Ease of use, mid layer with dwr
JPhO
top500Contributor

Just about perfect
November 13, 2010

This is my fifth different Arcteryx jacket over the years and one of my favorites. I bought it for backcountry use and around town during the NW winter. So far I’ve found it comfortable (with only a T-shirt underneath) down to the mid-40’s. I’d say its warmth is comparable to a mid/heavy-weight fleece with a windbreaker over it. In the backcountry I can use it down close to freezing when it’s over a long-sleeve lightweight wool top, and under a rainshell. The hood adds a lot of warmth for minimal weight and confusion. My favorite part are the cuffs, which provide a really nice stretchy, secure fit (unlike some other Arcteryx cuff designs). Fit and quality of the jacket are typical Arcteryx best in the business. I really like the clean design that's free of the sewn thru seams you see all across most other synthetic-insulated jackets. My only complaint (as I’ve seen others mention) is that the main zipper easily comes down. Arcteryx really needs to change this to a locking/stiffer zipper design. It’s only a slight annoyance for what otherwise is a perfect insulating mid-layer. I love the whole Atom line, and if you need more warmth, check out the Atom SV.

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Warmth: 4 / 5
dogman1234

great lightweight insulated jacket
December 10, 2011

This garment has Arcteryx quality through and through. Great warmth to weight/bulk ratio. Very compressible. It is my new favorite jacket for knocking around in the winter cold.

Pros: Great design, Build quality, Ease of use, Great value
Comfort: 5 / 5
Durability: 3 / 5
Quality: 4 / 5
FitClothes: 4 / 5
Warmth: 4 / 5
koucool
25-34 yrs

my first Arc'teryx
May 29, 2012

This jacket is extremely light and warm.According to Arc'teryx's website,this model is LT. But,I think it get potential for several seen. Of course,you put on only this jacket...use with layer jacket. Somehow or other, it good,very simply. I hope whether the following model comes out early. Maybe,I get it.

Pros: Great value, Cons: Cost
Comfort: 5 / 5
Durability: 3 / 5
Quality: 5 / 5
dbNoRockies
from Northern Rockies
55-64 yrs

Outstanding versatility!
September 04, 2012

Arcteryx does it again! A good ski buddy has a similar North Face piece that he wears almost exclusively while back country skiing and likes a lot so I thought I'd check out this similar item from Arcteryx. After reading all of the reviews here I must admit thinking folks were a bit over the top in all of their praise but after using one since last February I have to concur. The piece is extremely light, compressible, and above all for me, works in a wide range of weather/temperature conditions. Last March I spent a week at a back-country chalet in the Selkirks where the weather kept us repeatedly skinning a 2,000 foot climb between a steeply treed humid/warm creek bottom and a cold windy exposed ridge and I wore just the Atom LT over a thin base layer the entire time for both the up and down simply by adjusting the zipper. To be sure the fabric likely will not stand up well to snagging tree branches while skiing but with a bit of caution I've had no issues. In short, I'm totally sold -- even bought one for my wife and she loves hers as well.

Pros: Build quality, Performance, ventilation
wpcboy
from New York,NY

Absolute neccesity
May 25, 2011

Great jacket, snowboarding for 6 yrs. Will never be with out this jacket! Offers warmth and plenty of room to move. great quality materials, feels lightweight, doesn"t pull or cramp your arm movement. Is my new must have for the slopes.

Cincy
from Cincinnati, OH

Can't get much better
April 25, 2011

The cuffs on this jacket are amazingly comfortable. I'm 6'3" and pretty skinny and a large fits perfectly. I tried on the medium and it was way too snug, so I'm glad I stuck with the large. I was very impressed with this jackets wind and water resistance. I feel like it is almost wind and waterproof, but I haven't worn it in a down pour. Coreloft insulation is awesome, so this jacket is all I needed in the 32 degree and up range. I'm not too wild about the side polar tech fleece. Unless you are constantly moving and working up a decent sweat, you can really feel the wind and the cold. So, I just keep my arms down at my side. I'm not saying its a bad feature, but I'd rather have pit zips. I have had no issue with the zipper falling down. Overall, I think this jacket is the way too go if you're looking for a lightweight, warm, wind and water resistant, and very comfortable jacket. I gave it four stars only because i'd like to see it with pit-zips.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 4 / 5
trytofishmore
from Louisiana
55-64 yrs

Warmer than you think
March 22, 2012

Very warm, super light, and packable, must have for outdoor winter activities in the +0 range...paired with a shell and you are good for almost any temp. Great fit and same Arcteryx quality. Highly recommend.

Pros: Great design, Build quality, Performance, Cons: Cost
takas
top50Contributor

from NY

It is good middle wear.
December 09, 2010

Because the permeability is good, it takes an active part as the middle wear. It finds it useful very much because it is warm when putting it on under the shell jacket etc. It is a very good as middle wear on a cold day commodity. The correspondence of the shop is also good because S size is not sold, it is not so good there though I want to buy.

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
meig
from CA
25-34 yrs

Stylish, light, good for certain activities
March 27, 2012

I got this for my bf after I got the atom LT for myself which I loved. He usually wears a M (5'11", athletic/lean, 160lbs) and the M fit perfectly. He can fit a tshirt or a long sleeve shirt underneath. A thicker sweater makes it look too bulky. He tried the nanopuff before and that was just too short and boxy for him in M. This was a much nicer fit. He's had to layer a bit underneath for wearing in around town in northern California since it's not windproof and not the warmest but it's fine if he's active.

Pros: Great design, Build quality, Ease of use

The Best Jacket Ever!
March 23, 2010

So light and comfortable it feels like you are nude. At least on the top half.

Comfort: 5 / 5
Durability: 5 / 5
Quality: 5 / 5
Warmth: 4 / 5
JohnnyK

Excellent
December 12, 2012

I use this jacket for bike commuting. I had been using a down hoody from another brand for about a year. It started to rip along the sleeve and I contacted altrec to get it replaced. The representative suggested that the atom lt would be a better choice. He was definitely right. This morning I rode the bike in to work with a temperature being a crisp 23 degrees and the jacket performed as it was designed to. I was toasty when I got to my office.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
Campjeep
top10Contributor

from Pittsburgh
25-34 yrs

warm
December 18, 2012

I initially bought the Atom LT and loved it. It was very warm and very light. I use it throughout the winter as my sole jacket. Only when it goes below zero do I wear a windproof/ water proof shell on top. I love this jacket so much, that I bought another one, this time with the Atom LT hoody so that it is more versatile. Though it is pricey, it is worth it.

Pros: Great design, Build quality, Performance, Ease of use, Cons: Cost
mouse
top1000Contributor

Great jacket, wow
November 25, 2010

This jacket was even better than I expected. I love the look, style, fit. It is very warm. I like that the hood is not made to cover a helmet, so I can use it every day or under my helmet. This is the best mid-layer that I have and I have a lot of them. I like this so much that I an going to order the heavier SV model as well

five12free
from CA

Great Jacket
January 21, 2011

The jacket, as expected from Arc'teryx, is well built in every regard. I am 6', 180lb, 41" chest and normally wear between a medium and large in Arc'teryx. I went for a large in this one, so I could toss it over a light softshell or under a hard shell. It fits perfectly for both. It is extremely comfortable, lightweight (412g on my scale), and dries really quickly when wet from inside or out. I highly recommend it as a light belay coat or a cold weather action piece. I took it along on a ski approach to an ice climb (Cold Stream Canyon) last weekend and it was warm when I needed it to be and disappeared in my pack when not needed....what else can you ask for? The only drawback (in my mind) are the fleece lined pockets: I don't care for them, but I think I'm in the minority on that one.

What can I say...
September 09, 2010

Light, super warm and the hood fits under a helmet!

skier1212

Sizing
December 05, 2010

Great coat< with a good fit. I am 5'11" and weigh about 165-170lbs with a 31" waist and 42" chest. The medium was perfect. I think all the companies are starting to make their clothes larger. Wore it under a shell yesterday skiing and never got cold. If your like me, and always reading the reviews for sizing info, this will hopefully help.

Jacky21
top25Contributor

June 30, 2011

Awesome jacket! It has a unbelievable light weight, As for me, It 's more suitable for middle layer , not out-layer . It keeps me warm in cold winter, Moreover, it 's windproof and high quality made. I am very satisfied with it. But it's not suitable for extreme cold winter.

Yoshi
from MA

My husband love it!
December 05, 2010

I bought it for my whole family members, they love it! The best quality, comfort you can get.

kiwi2011
from Michigan

Great Jacket
February 27, 2011

Like other reviewers, this jacket surprised me with how effective it is. I layered this with the Theta (windproof/waterproof Arcteryx) and was very warm walking in 20 degree windy weather. Very light, fits good and is good if you want to be active and have free movement. Very happy with the purchase. Not sure how to rate durability as I have only had it for a few months. With both jackets (theta and atom) I am covered for four seasons, just layer as needed.

Swoopty
from Lexington, KY

A jacket of all trades (get it?)
January 11, 2011

I originally had the atom without the hood but I decided the hood would be good to have in the long run. This is jacket can be used as a stand alone piece in very low temps, but it is also a great middle layer when things get ugly. It's perfect for someone who is active and needs something light that can get the job done. This is a jacket that I will keep with me at all times during the winter months and I would highly recommend it to someone who is in the market for a light synthetic jacket.

Comfort: 5 / 5
Durability: 4 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 4 / 5
bslam
from Central California
25-34 yrs

Great fitting jacket
January 03, 2012

6'3" 185 lbs and have a heck of a time finding things that are long but slim enough. Tried on 6 different jackets (including marmot, outdoor research, and patagucc) before choosing Arc'teryx. The XL fits great, plenty of length in the sleeves, not too long in the back, and a nice slimmer fit. The cuffs are awesome, one of the coolest features of the jacket. The hood is pretty useless as it seems to only fit well if it is over a helmet (one size fits none). Overall, the jacket is warm and fits superbly, very happy with the purchase.

Pros: Great design, Build quality
hero1979
top250Contributor

from ca

nice jacket~~
December 29, 2010

Comfortable and warm. I wanted black. But the black was sold out. So I ordered the lichen, lichen also liked. If the order will be black again.

Bennieboi

Great Piece of Kit
December 17, 2010

Solid piece. I've worn it ice climbing as a mid-layer, basically replacing my fleece hoody. I plan to wear it through the rest of the season. Great cut for me (6'3", long torso/arms). No issues with mobility and long reaches. Also wear it around the city as an outer layer. It's warm for the weight, warmer than a fleece of similar weight, but not super warm. I haven't had it long enough to comment on durability. Hood is ample enough to wear over a helmet. However when fully zipped, the zipper easily migrates down an inch or two with any outward pill. Overall, I would highly recommend for similar usage.

Also Available

Arc'teryx Men's Atom LT Hoody Photo

Bison, Black, Black/ Black, Blue Ray, Cayenne, Deep Dusk, Heron, Kaktos, Kodiak, Olympus Blue, Platinum, Poppy, Silverstone, Squid Ink, Thalo Blue, Tobiko, Tungsten and Wheatgrass.

Available sizes, while supplies last, include size small, size medium, size large, size extra large and size extra extra large: s, m, l, xl, xxl.

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