Osprey Packs Atmos 50 Backpack
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Description
32 Reviews
Sizing ChartOsprey Packs Atmos 50 Backpack
Providing optimal ventilation without sacrificing comfort or support, the newly redesigned Osprey Atmos 50 Backpack carries your load closer to your back so you can log the miles like never before. This lightweight pack design certainly isn't the lightest on the market, but it the most comfortable and superbly detailed. Built with gender specific BioStretch™ Harness and Hipbelt for a secure fit and the AirSpeed Suspension system, the Atmos 50 can comfortably carry a load of up to 40lbs, making it ideal for active adventures, thru-hiking and superlight backpacking trips. Plenty of pockets keep you organized and dual hipbelt zippered pockets keep must-haves at your finger tips.
- 210D Twill Velocity Cordura®, 160D x 210D Window Ripstop Cordura®
- Airspeed Suspension system with LightWire Alloy Frame and 3D tensioned breathable mesh back panel with side ventilation
- Gender specific BioStretch™ Fixed harness with mesh covered perforate foam and slides adjustable sternum strap
- Gender specific BioStretch™ built-in hipbelt with mesh covered perforated foam and ErgoPull closure
- Hydration compatible, backpanel sleeve with hanger and dual side hose exits
- Floating top pocket
- Front stretch woven pocket
- 2 side stretch woven pockets with inner or outer compression
- 2 zippered hipbelt pockets
- Stow andGo™ trekking pole attachment
- 2 ice tool loops with bungee tie-offs
- Removable sleeping bag straps
- Volume: 2800cu in / 47L (Sm), 3000cu in / 50L (Med), 3200cu in / 53L (Lg)
- Weight: 3lb 4oz / 1.47kg (Sm), 3lb 6oz / 1.52kg (Med), 3lb 8oz / 1.57kg (Lg)
- Comfort range: up to 40lb / 18kg
32 Reviews - Osprey Packs: Atmos 50 Backpack
Write your own Review
Dan - 2010-01-26Incredible fit and high quality
I tried a Gregory Z55 first, but just didn't feel comfortable. Atmos distributes weight perfectly with no pressure points. Shoulder straps are bulky. Great pack - my only regret is not getting the 65 litre version - it only weighs a couple ounces more and would be a better all around pack if you only have one.
Anonymous - 2009-12-20Terrific pack, fits great and very light
Haven't tried it out in the field yet, but this pack just fits much better than comparable packs from Gregory. Very light, plenty of space, and well ventilated.
Mateo - 2009-11-26SIERRA HIGH ROUTE SUITABLE
Used it on a 25 day trip off trail in the Sierras. If not for having the "mandatory" bear canister I could have carried even more. I used the space in between the mesh back and the back panel to carry food, and other stuff. Fully loaded I was at 25lbs.
Write Your Own Review
32 Reviews - Osprey Packs: Atmos 50 Backpack
Dan - 2010-01-26Incredible fit and high quality
I tried a Gregory Z55 first, but just didn't feel comfortable. Atmos distributes weight perfectly with no pressure points. Shoulder straps are bulky. Great pack - my only regret is not getting the 65 litre version - it only weighs a couple ounces more and would be a better all around pack if you only have one.
Anonymous - 2009-12-20Terrific pack, fits great and very light
Haven't tried it out in the field yet, but this pack just fits much better than comparable packs from Gregory. Very light, plenty of space, and well ventilated.
Mateo - 2009-11-26SIERRA HIGH ROUTE SUITABLE
Used it on a 25 day trip off trail in the Sierras. If not for having the "mandatory" bear canister I could have carried even more. I used the space in between the mesh back and the back panel to carry food, and other stuff. Fully loaded I was at 25lbs.
Kathy Gish - 2009-11-22amazingly comfortable and versatile
I have covered many miles backpacking with this pack and have found it to be great. It carries a heavy load comfortably and can also be used as a day pack to carry water and snacks for exploration sidetrips along the way. The airspeed back was a good fit and kept my back cool and happy and the placement of the pockets and straps proved efficient. The redesign of the Atmos pack was a success with me.
rogerio miorando - 2009-10-01Great pack, light and comfortable
I purchased the Atmos 50 backpack for a 3 day hike on Patagonia. The pack is comfortable, form fitting, and very light. It has lots of adjustments and plenty of room.
johnpaul jenkins - 2009-08-22this is a very good pack
This is an awesome pack...I'll be taking it to Asia this fall
Ronan - 2009-07-22I Nearly Forgot I Was Even Wearing It
This is the best pack I have ever owned. I live in a wet climate and this pack exceeded my expectations even in this regard by keeping my items dry while still accessible. Extremely comfortable, and form fitting. This pack is definitely going to Mozambique with me!
johnpaul jenkins - 2009-07-05Awesome pack
Nothing but good to say about this pack...I'm about to take it to the mountains in Asia!!!
Anonymous - 2009-05-07The Most Thought Out and Comfortable Daypack On the Market
This is a truly amazing pack that has a lot of features such as, a whistle built into the sternum strap buckle (very cool), front stretch pocket that is great for wet clothes or items that you need to access quickly, and the best feature is the mesh back panel which helps keep your back cool and provides excellent support (plus there's HDPE panel on the back which keeps everything you stuff in this daypack away from poking you in the back. All and all, this is the best daypack on the market...I highly recommend it to all!!!
Karl Lane - 2009-03-23Fits all my needs and more
This is a great pack, I would recommend it to anyone. I have plenty of room in it for my gear and then some. It is a great 4 season bag.
Josiah - 2009-03-02Great Climbing Day Pack
Perfect for a climbing day pack. It can fit all of my gear. Make sure you get the correct size as it is very important. After about 50 pounds it starts to get a bit uncomfortable. The Atmos 65 would probably be better if you are camping and climbing.
Ben Spell - 2008-11-05Awesome gear!
This pack has all the bells and whistles. I recently used it for a 3 day hike on the AT in Va. It worked out great. I highly recommend this pack- one complaint would be tight side pockets for a water bottle, but no big deal if you use a hydration bladder. Always try on a pack before you buy - what works for one may not work for someone else.
Josh K - 2007-11-14Awesome Pack!
I have used this pack more times than I can count! Everything I need for a 3-4 day hike. I just took it on a 20 mile hike through the Ouchita Mountains (around Arkansas/Texas/Oklahoma) for 4 days. Held my Tent (Marmot Twilight 2), Thermarest, Sleeping Bag (Marmot Sawtooth), 2 Nalgene bottles, a bladder for water, medkit, repair kit, about 10 pounds of food, and about 20 other gadgets on it! The Atmos was very breathable (The hikers I went with has large sweat stains on their shoulders and waist which made them cold the entire time and I did not!) Vey convienent pockets made the trek that much more easy and enjoyable! Very good buy and well worth the money!
tonygolden - 2007-09-08virtually indestructable!
Ibought this pack in october of 2005. I have litterally wore this pac every day since. Because of inabillity to drive I have commuted on my freeride mountain bike in commbination with the bus since that date. My bike would always get handcuffed to the bus bike rack.on average I would be in and out of my pack at least 10 to 12 times per day.I wore it some much that the shoulder straps are starting to desintegrate. the only thing on this pack that has failed in all this time is the zipper on one hip pocket!!! I do think it is time for another atmos 50, but this one has been incredible! its a little tricky to load but after a time or too it is awesome! I would also recommend the rain cover for extra protection. I don't even use a suit case anymore for air travel.
Ben Brewer - 2007-09-01Perfect
The Atmos 50 is the perfect pack for everything between an overnighter and an extended backpacking pursuit. This is a great pack for keeping your gear lean and fast and at the same time being able to fit everything you need to keep things comfortable. I love the ventilation feature and the way it contours to my back. I would highly recommend this pack to moderate lightweight enthusiasts and anyone else exploring the idea of going lightweight.
Dave - 2007-08-19Comfortable and Lightweight
I bought the Atmos 50 backpack for a day hike up Mt. Whitney. I wanted a lightweight pack large enough to hold rain gear, extra layers, water filter, survival gear, etc. This pack was plenty large enough to hold all my gear, weighing in at 15 to 22 pounds including 2-3 quarts of water and food. This pack is very comfortable. The shoulder and waist straps are easy to adjust, but I found the waist strap would occasionally loosen up a bit, thus requiring an occasional tug on the adjuster. My hiking buddy also experienced the slipping waist strap on his Atmos 50 pack too, so I wasn’t the only one experiencing this problem. The breathable mesh back panel is awesome and keeps the back of my shirt dry. My CamelBak water bladder works perfectly with this pack. I usually hang it behind the mesh back panel to free up more space in the main storage compartment. One of my favorite features is the zippered mesh pockets on the hip belt, which provides easy access storage for my camera.
nick kishmirian - 2007-02-25Nice pack
Purchased the Atmos 50 last November and tried it out on an overnighter at Pt. Reyes last month. I put inside a Marmot Pinnacle 15 degree down bag, a MSR Mutha Hubba 3 man tent, rain gear and pack cover, change of clothes in a medium size Granite Gear dry bag, and toiletry items. I strapped on a Big Agnes Dual Core sleeping pad to the outside of the pack. That helped make the pack stand upright a little better. My pack topped out at 25 lbs at the most and I had room left over in my pack. (My buddy carried the food and Jet Boil stove)
I'm still trying to figure out if I can get my Bear Vault cannister in there somehow (strapping it on underneath the floating top lid seems to bonk my head at times) or if I need to get the Atmos 65 or Aether 70. Overall a great one to three nighter pack!
Anonymous - 2007-01-05Its True
As everyone else claims, this is a fantastic pack. Just bought it for a friend who can hardly wait to load it up and hit the trails. The mesh back is a great feature, as are the perforated hip and shoulder belts. Its super light, contours to the body and has plenty of room. A great choice!
CAF Packer - 2006-09-13BEST ALL ROUND PACK I OWN
I have 80L, 90L and multiple 25L and below backs and was looking to get a 35L and a 50-65L to finish off the group. Through reviews and recommendations from friends, I started off with Osprey's Atmos 50. Glad I did, I really don't need the 35L version now (although I'm sure it's still a good pack). All the other good points listed in other reviews are true, my personal highlights for pros are as follows: top note for the waste strap, doesn't look like much at first(worried actually) until I put it on, smooth and very good distribution on waste (no pinching) and takes weight well. The little details of pouches in waste strap and user friendly front compartments was well thought out. The airflow system works as advertised, I'm a natural born sweater and where this doesn't eliminate the problem, it does reduce the problem more than any other backpack I've tried or seen on the market, good call boys! Nothing else unique on the pack, has all the other basics expected on a higher end pack. One and only concern is the durability, the materials are very light and construction is good, I fear that these new generation of backpacks (other companies switching to similar materials) are more susceptible to tearing on a branch or other gear during the trip out, but only time will tell. So until that tear happens, this pack makes giving a 5 easy. If you're looking for a 25 - 65L pack, save the trouble of time and money and pick this one up. Cheers and enjoy!
Chris Savage - 2006-09-13Comfort!
Great pack! I tend to weight myself down when I hike no matter how much I invest into ultralite gear but this pack makes it easy to carry. My hiking companions are amazed by how much I carry and how far and I tell them, "this pack makes it comfortable". I Love My Atmos 50. I use it for my daily commute here in Seattle as well as my multi day hikes in the Cascades.
Anonymous - 2006-07-31Great pack, different than others i have owned, but great,,,
This is a pretty cool pack, very light, has lots of room for the essentials. Packing it is a little different from other packs, due to the way the internal frame is designed. I found I have to pack the outside pockets first, than do the inside, or else I have a diffucult time packing what I want in the outside pockets. All in all very light, and very comfortable. Would definitely buy again...
PelesGuitar - 2006-07-13You might just fall in love!
I did SO MUCH research before buying this, as it's my first pack and I live far away from camping stores.
Out here on the Big Island of Hawaii
it's great to have a pack that I can use for lightweight day pack adventuring, that keeps me dry, as well as for a few overnighters, camping or travelling without a problem. The red color is beautiful and shiney.I baby it a little...The zippers are alot tougher than I sometimes think they are, and the weight distribution is fantastic. I'm a five foot five female, weigh about 125 and love to jog and hike fast when I'm on the trail. I've gone down steep inclines, jogging, with this packed full, with an eight pound tent in it, and my back didn't hurt a bit, it's all distributed correctly.
The numerous pocket options keeps me entertained, and I can disconnect the top compartment and
put some little things in it if I don't want to carry the whole pack.
It's also hydration compatable, can compress to a day pack or expand to what looks like and feels like more than the 3,000cu.
I like the airflow back pocket for dirty clothes, or extra stuff, and the water bottle pockets are big enough to put other stuff in them too. Way cool pack, so glad I did the research and made this choice.
Definately get the right SIZE tho.
Michael D. - 2006-05-23Great wekender pack!
Lots of adjustments make this a great pack to prevent sore spots. It's roomy enough for several days of stuff, but I doubt it is intended for long hauls unless you are a minimalist.
The mesh backing is great for preventing sweat (and that matters a lot here in the Southwest.
I rate this pack a 5.
riverwalker - 2006-05-23top of the line features and fit
This is an excellent pack! You cannot go wrong with the Osprey fit and construction. The Atmos line offers great features and support. Go by the sizing chart offered under the photo to make sure you get a good fit and make sure you load the pack correctly. This is a great lightweight pack that can be used throughout the Spring, Summer and Fall hiking seasons! Altrec.com and Osprey are a great combination!
polish calvary - 2005-09-20Nice hips
I compared this pack to a Gregory very closely before i purchased. The two packs sit very differently on your body. I like the Osprey because it sits squarely on the hips more like an external fram pack but without the sloppyness. The ultralight flexible frame moves the weight to the hip blet evenly. Gregory packs and many other internal frame packs put a bunch of weight onto the small of your back. This feels good at first, but for 20+ miles in one outing, put the weight on my hips please. As with any pack you might wander off into the world with, try it on before you buy it.
John Chappell - 2005-08-19You need this pack!
I love this pack! The airflow system is great and keeps me cool. The unusual frame makes packing it a little different at first, but once you get used to it, it is no issue. I've tried so many different packs looking for a light weight that still felt sturdy enough. It has been a delight to wear this pack. Osprey's products are always good, but this one is something really special. If you are looking to trim weight and still carry everything you need, the atmos 50 is the ticket!
Michael Vilmain - 2005-07-11mpvilmain2@msn.com
The best! I now own six backpacks that will never be used again because of the Osprey Atmos 50. Thanks
Holly W - 2005-03-27Outstanding!
It has a plethora of goodness wrapped inside a light out of this world ectoskeleton that fight my back seamless. Kudos to osprey!
Matt L. - 2005-03-07Light and comfortable
Light, fast, and functional. At first, the extreme curvature of the frame stays seemed to detract from the useable capacity of the pack, but after some use, I've found it to be a non issue. The only gripe I had was a pressure point on my shoulder blade when I really loaded the thing down. This was resolved with a 5 minute "tweak" of the stay. Bottom line is this is the most comfortable pack I've owned, and I'm continually suprized by how much I can pack into it.
Travis Hostetter - 2008-04-13This is a really nice pack, but...
I am training to hike about 300 miles of the AT this summer. I picked up this pack in preparation for the hike. I have done several weekend trips for a total of about 50 miles, here are my impressions so far:
Pros:
Lightweight.
Great frame design.
Comfortable.
Plenty of pockets.
Breathable/keeps your back nice and cool.
Convenient design for storing items in specific locations.
Cons:
Skimpy padding.
Mesh side pockets get caught easily when "bushwacking."
The design for keeping your back cool cuts into your internal storage space.
All in all, this is a great pack. It carries 25 lbs. nicely but if you are trying to push 40 lbs. it will not be comfortable. If you are thinking about picking this pack up, you should. As long as you are trying to be a light packer and not carry a ton of extra stuff.
Chelsea Huff - 2008-01-27Most excellent
The pack, like most are saying is a dream come true. It has everything you need and more for a quick nip into the backcountry on the weekend, and enough room for a longer trek. It is also great for hauling gear instead of a suitcase. My only concern would be the durability of the mesh backpanel and its longterm abilities to prevent back problems. I haven't had any problems on weekend trips, but on longer treks, 20 miles a day, for a few weeks, I noticed back fatigue I haven't noticed with other packs on similar treks.
Anonymous - 2006-09-29Great Pack
Great pack, fits just right. Try it, you will love it!
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Sizing Chart
Step 1 - Pack Sizing
All Osprey packs, save the transit bags, are available in multiple sizes to fit a range of torso lengths. To find your torso length, have a friend measure your back along the spine from the level of your iliac crest (the top of your hipbones) to your C7 (the knobby bone at the base of your neck).
Step 2 - Hipbelt Sizing
To determine your hipbelt size measure around your hips, not your waist. A properly fitted hipbelt rides centered over the hipbones and needs to be very snug; after all it will be carrying the bulk of the pack's weight. The padded portion should wrap well around your hips, leaving a gap of 3 to 6 inches between the tips of the pads when securely tightened.
| Torso Length | Pack Size | Hip Measurement | Hipbelt Size |
|---|---|---|---|
| > 22" | XLarge | > 36" | XLarge |
| 20-22.5" | Large | 33-37" | L or WL |
| 18-20.5" | Medium | 30-34" | M or WM |
| 16-18.5" | Small | 27-31" | S or WS |
| 14-16.5" | XSmall | < 28" | WXS |
| Torso Length | Pack Size | Hip Measurement | Hipbelt Size |
|---|---|---|---|
| > 20" | Large | > 36" | XLarge |
| 18-20.5" | Medium | 33-37" | L or WL |
| 18.5"- | Small | 30-34" | M or WM |
| - | - | 27-31" | S or WS |
| - | - | < 28" | WXS |
| Torso Length | Pack Size | Hip Measurement | Hipbelt Size |
|---|---|---|---|
| - | - | > 36" | XLarge |
| > 20" | Large | 33-37" | L or WL |
| 18-20.5" | Medium | 30-34" | Medium |
| < 18.5" | Small | 31" | Small |
| Torso Length | Hip Measurement | Pack Size |
|---|---|---|
| > 20" | > 33" | Large |
| 18-20.5" | 30-34" | Medium |
| < 18.5" | < 31" | Small |
| Torso Length | Hip Measurement | Pack Size |
|---|---|---|
| > 18" | - | M/L |
| < 18.5" | - | S/M |
| Torso Length | Hip Measurement | Pack Size |
|---|---|---|
| > 20" | > 33" | Large |
| 18-20.5" | 30-34" | Medium |
| < 18.5" | < 31" | Small |
ErgoPull
Nearly all Osprey hipbelts use an exclusive ErgoPull design. It creates mechanical advantage to provide extra leverage in cinching down the hipbelt. The ErgoPull design also draws tension along the top and bottom of the belt, not through the center, so it distributes pressure more evenly over the padding and relieves direct pressure on the hipbones.
Step 3 - Harness
Osprey Crescent & Luna, Aether & Ariel and Waypoint packs offer interchangeable shoulder harnesses. Harness sizing usually corresponds to pack size, but your best bet is to try one on. A properly fit harness should terminate 2 to 3" beneath the armpit. Webbing should not touch the body. By breaking the hook and loop connection and sliding the harness up and down the backpanel the torso length can be adjusted up to 3". (see illustration).
| Men's | SM | MD | Large | XLarge |
|---|---|---|---|---|
| Women's | WXS | WSM | WM | WL |
Step 4 - Overall Fit
Once you have the correct size pack, harness and hipbelt, and the torso length set properly, it's time to put some weight in the pack (20 to 30 pounds of well distributed weight will do) and dial in the fit. First, snug down the hipbelt and harness. Connect the sternum strap (A) - position it about 2 inches below your collarbones and snug it down lightly. Finally, tighten the load lifter straps to draw the load solidly against your back. The lift straps (B) should come off your shoulders at a 45 to 60 degree angle in Osprey's ReCurve and Ethereal Suspension packs. In other models these straps serve more as compression straps and ride flatter; they may even angle downwards.
In a good fit, there should be no pressure points and no gaps between your body and the pack. With Osprey's ReCurve packs, final tweaking may involve custom fitting the aluminum stays to your back.
Aspen Gold, Graphite Grey and Green Apple. Available sizes, while supplies last, include size small, size medium and size large: s, m, l.
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