Osprey Packs Atmos 35 Backpack

Go fast and far in amazing comfort with Osprey's Atmos 35 backpack. Excellent for day hikes, overnight minimalist trips and weekend adventure racing, the Atmos 35 streamlines efficiency with full-length, panel-loading access and plenty of accessible features. Anything that touches your back is covered with a breathable mesh or a special perforated waffle foam that won't heat you up like conventional backpanel fabrics. The backpanel on the Atmos 35 is stretched taut so the load sinks evenly into the lumbar support area instead of riding on your hips, resulting in uniform pressure that neutralizes hot spots. Two quick release straps on the other side of the backpanel attach to your hydration pouch for fast refill access and versatile hydration tube routing. If you've always wanted a supportive Osprey day pack but you worried about extra ounces, the Atmos 35 could be the last light pack you'll ever need.

Durable and lightweight 210-denier broken twill nylon/210-denier double-ripstop nylon
Osprey AirSpeed suspension with 6005-T6 aluminum alloy frame and composite rods
Ventilated thermoformed and perforated waffle padding along shoulder pads and hipbelt
Welded front pocket and water-resistant zippers for durable, weatherproof performance
Panel-load configuration features two zippers for instant access to contents
Hydration pouch behind mesh backpanel features tube holes for easy access
Zippered mesh pockets along hipbelt with ErgoPull hip straps
Removable sleeping pad straps
Stretch woven side pockets
Dual ice axe loops with tie-offs
Capacity (S/M/L): 1900 cu. in. (32 l.)/ 2100 cu. in. (35 l.)/ 2300 cu. in. (38 l.)
Weight: 2 lbs. 9 oz. (1.16 kg.) in medium size

19 Reviews - Osprey Packs: Atmos 35 Backpack

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Anonymous - 2008-09-15

Extremely comfortable and durable.....
I've finally found a day backpack that is very comfortable, moderate size and durable. Comfort is the leading indicator of how much I enjoy this pack; space/volume is secondary and extra pockets is next. My first use was a 10 mile hike and it was a pleasure to use.

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Matthew kreg - 2008-07-07

Very comfortable
This pack is very comfortable . I have used it for numerous day hikes of varying distances and my shoulders always feel great when finished. The mesh also keeps your back well ventilated. The internal frame did make me adjust the way that I pack some of my gear, but it is definately worth it for the comfort. I would definately recommend to others.

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Miroslav Rakic - 2008-03-29

great pack
I hike and rock climb a lot and I find this pack to be perfect for both. I use my camelbak bladder with the h2o port and it works great. being able to get different sizes played a big part in my decision. overall, I am very pleased. great fit, great utility, and super comfortable.

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19 Reviews - Osprey Packs: Atmos 35 Backpack

Write your own Review

Anonymous - 2008-09-15

Extremely comfortable and durable.....
I've finally found a day backpack that is very comfortable, moderate size and durable. Comfort is the leading indicator of how much I enjoy this pack; space/volume is secondary and extra pockets is next. My first use was a 10 mile hike and it was a pleasure to use.

Was this Osprey Packs Atmos 35 Backpack Review Helpful? - Yes - No

Matthew kreg - 2008-07-07

Very comfortable
This pack is very comfortable . I have used it for numerous day hikes of varying distances and my shoulders always feel great when finished. The mesh also keeps your back well ventilated. The internal frame did make me adjust the way that I pack some of my gear, but it is definately worth it for the comfort. I would definately recommend to others.

Is this Handy? - Yes - No

Miroslav Rakic - 2008-03-29

great pack
I hike and rock climb a lot and I find this pack to be perfect for both. I use my camelbak bladder with the h2o port and it works great. being able to get different sizes played a big part in my decision. overall, I am very pleased. great fit, great utility, and super comfortable.

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Phil Wu - 2008-03-01

Very Nice
I love the cool airspeed suspension system. The pack is light and comfortable.

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Anonymous - 2007-10-13

Awesome Pack
I use this pack for day hikes and overnighters and it does not disappoint. Plenty of room, keeps my back cool, and most of all it is comfortable.

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Anonymous - 2007-10-04

Amazing pack, but not for cycling
I'll rate this pack a full 5 stars. I can't think of anything wrong with it. Both the design and construction quality are impeccable. However, this particular pack did not work for me because I need a pack that is compatible with cycling. When riding, this pack rides slightly higher on my torso, and the top of the frame hits my head and helmet; I actually can't even lift my head all the way, which makes this issue both annoying and potentially dangerous. If you're looking at this pack and you need to use it while cycling, I recommend checking on the Osprey Stratos line instead. The Stratos 24 works for me. It is slightly smaller than the Atmos 35, but large enough for my needs.

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james wedlake - 2007-08-20

Well thought out pack
The back ventilation rocks and when it gets cold and you want a little insulation a fleece behind the back netting works great. The main zipper could be a little more beefy.

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Sarah - 2006-10-21

Great pack
This pack is lightweight, durable, and very comfortable to carry. Great for long day hikes. The suspension seems like it takes up a lot of the pack's room, but I have found putting my hydration pack in the cavity behind the mesh mitigates this. I have never not had enough room in the pack, even on winter hikes.

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dongwoo - 2006-09-11

Need 2nd compartment
I am serious hiker, two times a week run 20 mile everyweek. I like almost everything about it, but it should have better zippers(strong)9 and the roomly compartment(what they have now for day hike) should be divided by two for stuff less used like a deutor futura 32,36,38.... Last week, I did 17 miles, it felt really great,I did't feel any weight during I walk. I wish I have little big hip belt pocket than now, so I can use snack. Generally specking......good and comfortable, satified.

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Anonymous - 2006-08-29

Excellent Ventilation
This is one great pack. I've been looking for the best relief from a sweat soaked back. I live in the Phoenix area and with the temps we have in the summer, the air mesh panel is a Godsend. Other packs with the chimney panel only work for a little while; so far this one has kept me cooler and drier by far. Additionally, the unique harness straps with their ventilation holes help in cooling and, while adequately padded, aren't bulky.

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Edward Gronkowski - 2006-08-27

You need this pack
I bought this to use while commuting on my bike. It is roomy, lightweight and secure. I carry three locks and their weight plus the clothes I'm carrying stay put. My only issue (my problem) is that it is a tad long for my body (I'm 5'11"). When cinched against my waist, my helmeted head pushes against the top of the pack. Otherwise, it's as good as I expected.

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Anonymous - 2006-08-25

Simply the Best
Durable, comfortable for all day hiking

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Juan Carlos Hernandez - 2006-08-11

Great pack!! Used for 26 days straight
I just completed the St. James Way walk in northern Spain and this pack was just right for all those days of walking. It was easy on the back and it fit all the things I needed.

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Anonymous - 2006-06-12

Excellent Pack
I used this pack on a long day hike. It worked very well. The air mesh back panel was a great addition. It should be noted that heavy loads (40+) are not something I would recommend with this pack. The interior does take some getting use to when it comes to packing. Overall a good day pack and overnight pack.

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Chris L. S. Coryn - 2006-06-04

Excellent quality and durability
Overall, the Atmos 35 is a high quality, durable pack. I recommend it for short day trips in particular. It is light, well-fitting, and the airspeed backing makes heavy loads seem light. A++

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Anonymous - 2006-05-28

great backpack
I used this backpack at a 1day hiking, it was great.Back is covered with a breathable mesh so my back is never get sweat.Good design, good quality. Now I want to buy osprey atmos50 for 2day hiking...

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Anonymous - 2006-03-16

Superior day pack.
Some packs just seem right. The right design, weight and quality construction are the things that separate the great packs from the good packs. This is a great pack.

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Eliza - 2006-12-03

Great Day Pack
I used this every day this summer as a gear bag for my forestry job. Unlike my boots, this bag held up quite well. The only thing that bothers me is that the hip belt rides a little high (above my waist). Overall, the pack was extremely durable and the ventilation in the back is AWESOME!

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Connor - 2006-11-30

Great pack
I took this to Europe for a month, and it was great. The mesh back in heat works wonders. My only concern is its size now that I'm back - it seems a little big for a day hike, at least in summer, and too small for an overnight. Still, great design, I'd buy it again

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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.

Crescent Series
Luna Series
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

Aether Series
Ariel Series
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

Exposure Series
Switch Series [55+5, 40+5, & 25+5]
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

Atmos Series
Stratos Series [34, 32, & 24]
Torso Length	Hip Measurement	Pack Size
> 20"	> 33"	Large
18-20.5"	30-34"	Medium
< 18.5"	< 31"	Small

Stratos Series [18 & 12]
Switch Series [18 & 14]
Daytool Series [Focus, Flux]
Torso Length	Hip Measurement	Pack Size
> 18"	-	M/L
< 18.5"	-	S/M

Waypoint Series
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.

Harness 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.

Osprey Packs Atmos 35 Backpack

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