
Specifications based on size Medium. Specifications for Small and Large torso / waist and hips / base volume / weight are as follows:
Imported.
Item 780216
Specification | Description |
| Gender | Men's |
| Frame type | Internal |
| Backpack style | Lightweight backpack |
| Approximate volume | 3,000 cubic inches |
| Approximate volume - metric | 50 liters |
| Average weight | 3 lbs. 6 oz. |
| Average weight - metric | 1.52 kilograms |
| Adjustable torso | No |
| Fits torso | 18 - 20.5 inches |
| Fits waist/hips | 30 - 34 inches |
| Material | Nylon |
| Frame material | Metal alloy |
| Number of stays | 1 peripheral hoop |
| Number of pockets | 7 + main compartment |
| Access / Loading | Top |
| Sleeping bag compartment | No |
REVIEW SNAPSHOT®
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Reviewed by 21 customers
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Comments about Osprey Atmos 50 Pack:
This pack served me well on my 2007 Appalachian Trail thru-hike. I've always sweated a lot, but never once did I get a sticky back from the ventilated back on this pack. In freezing temperatures, I stuffed my fleece in the ventilation compartment.
The design is ingenious and by far the best pack I've ever worn. Don't load it over 30 for a good ride. I once carried slightly over 35 lb between resupplies and the molded frame didn't quite fit right. A huge plus, the shape and movement of the pack really keep it out of the way when climbing is in order.
The awesome Osprey staff even fixed my nearly worn out pack at Trail Days, so now it's going on a Florida Trail thru-hike once I'm done with grad school. For the Pacific Crest Trail, I'm upsizing to the Atmos 65 due to longer resupply stretches.
My only possible criticism is the odd shape of the inner compartment that forms due to the ventilation compartment. It took me a month of trail before I learnt how to best fit all of my gear in there.
In short, a truly great pack. My Osprey Atmos 50 has been through it all (and looks like it too), but still has another two thousand on it.
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Comments about Osprey Atmos 50 Pack:
Bought a large size a coulpe of weeks ago and loving it. I'm a heavy sweater, and love the ventilation system. I've used it for three hikes so far and it's been really comfortable. I was carrying 25+ lbs and did not feel any hotspots after 3+ hours of hiking. If you are planning to carry up to 30 lbs, this is a good pack. One minor complain, when climbing/scrambling over some boulders the top part of the frame kept hitting the back of my head.
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Comments about Osprey Atmos 50 Pack:
The suspension is great and breaths very well. The 2009 design allows you to fit much more into the main compartment than any other breathable pack I have seen (significantly better than the 2008). The 2009 also has water bottle pockets that fit bottles diagonally so you can actually reach them (I used a 1.5 liter SIGG).They are just about as light as the Exos but are made of a more durable material. I especially love the stretchy mesh drying pocket and compression straps.
I was surprised when comparing the Atmos 35, 50, and 65 because the main compartment on the 35 and 50 are almost the same size if you only pack to the top of the frame (I hate packs that stick up high). The 65 has additional space due to the zippered lower compartment.
If you intend to use the pack for travel on a plane or want the flexibility to compress it down and have a great day bag – get the Atmos 35. Even the large size can be carried on any flight (except flights out of the UK – the large size was a few inches to long if they actually measure however I was able to get mine through security b/c it looks enough like a normal back pack). Also the zippered main pocket makes accessing the main compartment and things packed at the bottom much easier.
If you know you will be hiking light, go with the 50. It has a brain and extra space above the frame if you need it. It does not have the lower pocket and will distribute the weight of lighter loads better. In addition if compressed, lacking the lower pocket will make it better for a day bag.
If you are only using the pack for extended hiking and camping I would probably go with the 65 because I like the zippered lower pocket on the 65.
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Comments about Osprey Atmos 50 Pack:
This pack is great, fits like a glove. (I have the Aether 70) I love it and everything about it except the fact that I question its durability. I've had this pack for 4 months now and the frame is already showing through the bottom fabric from setting the pack down with a load.
It needs some kind of durable material to cover these parts because any abrasion or contact with a hard surface quickly eats away at the material covering the frame at the bottom of the pack.
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Comments about Osprey Atmos 50 Pack:
This pack is very well designed, functional, light-weight, and comfortable. Handles 30lbs easily, and comfortably. The air speed suspension system is no gimmick, but a really smart comfort adding enhancement while shedding weigh. My only warning has to do with sizing. These packs run small. I was measured to wear a medium,(5'11") but it was borderline. If you get this pack too small, your going to transfer weight to the shoulder instead of the hips. With the large I've hiked as much 8 hours with no ache or discomfort in the upper body. This has never happened with my other packs.
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Comments about Osprey Atmos 50 Pack:
I normally hike strenuous multiday trips. All weather conditions from dead summer to 1 foot of snow.I wanted to give this pack 5 stars. Osprey makes great packs. When this pack has around 20 lbs inside, it ROCKS! Great for ultra minimalist. At this weight the pack seems to be one with your body. The new suspension seemed to work and allow my back to breathe. I love the compartments on the outside. They are constructed to flow perfect with the pack. Nothing sticks out to get hung on a low hanging branch or a narrow trail. The odd shaped interior compartment is cool. To save weight, I did away with compression sacks years ago. My down bag, tent, and clothes conformed exactly to the bag. There were plenty of compression straps to keep everything tight. The H20 compartment worked just as expected.Now for the downside...We recently hiked 14 miles on a strenuous trail. I normally carry -25 lbs. However, this was a winter trip so I added an extra 6 lbs in clothing, food, etc. This pack couldn't handle the load. I have worked for REI and know the proper techniques to fitting a pack. No matter what adjustments I made this pack felt as if the weight was all on my shoulders. At 30 lbs it was a school book bag. I have put this bag to the test and Never had a seem failure. However, I did experience some abrasions near the bottom corners of the pack where the wire frame runs through. I used a product called Plasticote to cover the abrasions and now it seems to wear like iron. Without it I would definitely have seen the frame wear through.In conclusion, Address the frame wearing at bottom and use it for 25lbs or less and it is a great pack. Otherwise step up to a heavier suspension
Pros
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Comments about Osprey Atmos 50 Pack:
This pack seems quite well thought out when it's not packed full of your gear for the weekend, but in practice, it falls a bit flat.
The Good: There is a pocked stitched to the underside of the top pocket that's perfect for things like keys, phone, and wallet - things you probably won't need, but definitely need to keep track of. Also, an incredibly loud whistle is built into the cross-chest strap, which may or may not come in handy, but it's comforting to have immediately available.
The Bad: First of all, when you pack this bag, the AirSpeed suspension/air circulation system that seemed like it was going to work so well flattens out and effectively disappears. The straps are redesigned for this year - sort of - they just feature bigger holes for ventilation. I didn't notice any real advantage, having used both this and the earlier model of pack. The hip-belt pockets are made of some material that reminds me of chicken-wire, and it's incredibly hard to open or close them one-handed.
The Verdict: This pack is well suited for real lightweight minimalist campers that aren't terribly concerned with how comfortable their pack is on longer hikes.
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Comments about Osprey Atmos 50 Pack:
I am a 5'2" petite woman with almost no hips, and my Atmos 50 (sm) is super comfortable! I can fit a sleep pad, cookset, camping hammock inside- but not a sleeping bag. [$]This was more comfortable. The front hip pockets and the mesh back are my favorite features. The internal frame makes it difficult to pack uncompressable items.
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Comments about Osprey Atmos 50 Pack:
I've used this mostly on day hikes and to hike into campsites for one nighters, and it's absolutely great! I could probably do a solo three nighter out of this bag if I packed smart, but haven't had a chance to try it yet.
The ventilation on both the back and the straps is phenomenal, although it takes some adjusting to get used to the inside shape. The front mesh pockets are a little small, but that's where I keep my compass, firestarter, and other small what-nots. If you have a camera that's a little bit smaller than a disposable then it should fit in the pockets as well.
The hip belt is surprisingly comfortable as it looks to be rather thin. The only downside is that you pretty much have to get the camelback in order to have water handy, as there's no convenient place to put your water bottles.
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Comments about Osprey Atmos 50 Pack:
Brilliant design. Most comfortable pack I have ever used.
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