| Atmos 50 Backpack by Osprey |  | Brand: Osprey
Temporarily Out of Stock... But Amazon Should Have It
Rating:  5 reviews
Media: Misc.
MPN: 034050
ASIN: B00078EY3O
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| Features:
| • | Outside magazine 2005 Gear of the Year Award recipient | | • | 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 |
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| Editorial Reviews:
Product Description
200223 Features: Breathable mesh fabric is stretched across the ergonomic frame to create a cavity that provides superb airflow in the back contact zone Airspeed suspension with 6005-T6 aluminum alloy frame and composite rods that feature struts in the middle which allow the pack to flex from side-to-side Thermoformed and perforated waffle pattern shoulder straps and hipbelt allow for minimal surface contact and superb ventilation Hydration cavity behind mesh panel with hydration tubing portholes; a central exit for the hydration tube allows routing to either the left or right shoulder strap Lots of storage in the floating top pocket, large twin front pockets with welded water-resistant zips and welded front stretch woven pocket Easily access small items in the stretch woven side pockets and zippered mesh pockets on the hipbelt Daisy chain with removable shockcord clips for lashing on more gear The features are rounded out with ErgoPull hip straps and removable sleeping pad straps Specifications: Capacity (cubic inches): 2800 (Small), 3000 (Medium), 3200 (Large) Weight (pounds-ounces): 2 lb 15 oz (Small), 3 lb 1 oz (Medium), 3 lb 3 oz (Large) Material: Nylon Number of pockets: 5 + Main compartment Access: Top, panel Fits torso (inches): less than 185 (Small), 18-205 (Medium), more than 20 (Large)
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| Customer Reviews:
 Great Pack May 27, 2008
Danelle Hilgers (Denver, CO USA)
2 out of 2 found this review helpful
This pack is perfect for full weekend hikes. The best part for me is how much it breathes and keeps my body cool on a long hot day of backpacking and the weight distribution is perfect. If you are considering this pack you should get it.
Love this pack August 8, 2007
Michael Levine (Pomona, Ca USA)
6 out of 7 found this review helpful
This pack has a purpose, it is a ventilated pack. It does this job extremely well by letting air flow around your back. It also has hole filled shoulder/hip straps that are surprisingly rugged and comfy.
This pack has a lot of cool features. From those rounded mini bungee/soft-plastic zipper rings, shoulder straps with a whistle, a stretch pocket in front, axe holsters, mesh pockets on the hip straps, floating removable top compartment, just about everything.
I'm in love with mine. I tried on anything and everything REI had, it was between this and a Deuter pack with similar off the back construction, but the Osprey out-classed it by far.
The easiest 5 stars I've ever given
 Solid pack but difficult shape July 23, 2007
Andrew Harris
4 out of 6 found this review helpful
I love the pack and all it's features. It fits very well and is built solidly. I did not like, however, the massive space that was taken by the frame system. It was hard to put objects in the pack and hard to put anything with a rigid form in the pack (bear bin, pots...)
Lightweight and lots of room December 6, 2006
Casey Schreiner (Los Angeles, CA)
6 out of 6 found this review helpful
I bought this pack for 2-3 day backpacking trips around Southern California. It's a top-loader, so packing everything in requires a bit of push and pull, but the pack is light, fits very snugly against the body, and is not bulky. The hip support system is phenomenal. I had 40 pounds in my pack, and could barely feel it on my shoulders or back.
Another great thing about this pack is the back itself. There's a mesh frame and supports that hold the pack away from your back, so there's plenty of room for air circulation. No more sweaty backs!
Highly customizable, highly portable, highly recommended.
 review of mutliple backpacks for europe trip April 28, 2006
notmyname (Chicago, IL United States)
13 out of 55 found this review helpful
I was taking a 17day trip to europe and my only luggage was one backpack.
I compared the following backpacks: '06 REI UL30, '06 REI Catalyst 35L,
'06 REI UL45, '05 Kelty Redwing 3100, '06 Gregory z pack, '06 Gregory g pack,
'06 Osprey atmos 50, '06 Osprey atmos 35
Testing:
First off I recommend REI for backpacks. They have a very liberal return
policy which allows you test at home and then return. Also very knowledgeable
and helpful staff.
Some of these (REI UL30, REI UL45, REI Catalyst 35L, Gregory Z-Pack and Kelty Redwing 3100) I purchased and tested at home, them later returned.
For these I packed exactly what I was bringing with me to europe. Total weight of pack was 23-25 lbs., then later returned. I also did instore testing on all of them by packing weight sacks equaivalent to 20-25 lbs and then walking around the REI store for 15 mins.
This was an April trip so I needed some mild to chilly weather clothes.
For reference as to how much the packs can hold, this is what I packed in each of the bags I tested at home and eventually what I brought to europe on my trip:
1 pair jeans
1 pair lightweight long pants
6 pairs boxers
1 short-sleeved tshirt
2 long-sleeved tshirts
1 long-sleeve columbia fleece
1 tolietry kit
2 paperbacks
2 small top10 travel books (equal to 1 paperback together).
2 undershirts
6 pairs socks
1 pair gym shorts
1 long sleeved button down shirt
1 sweater
1 folded up duffel bag to use for return trip for souvenirs
1 outlet adapter
1 ipod power supply
1 cell phone power supply
1 marmot precip jacket (sometimes I was wearing this)
I first wanted to see if everything would fit and then I put the pack on for about 15-20 mins. I also wanted to get a pack that was small enough to carry onto a plane. For sizing note that I'm 6'3 190 and always tested the large size which hold a bit more than the smalls and mediums. Also note that I bought 4 of the REI stuff sacks and put clothes in those. They worked great for easier packing.
Backpacks Tested:
'06 REI UL30 - $85
Tested in store and at home.
Very light. Not much in the way of outer pockets. I could just barely get everything into this. That's with really squeezing and putting most books in outside pockets.
I really liked the skinny/tall feel of the pack. The support system and padding on the shoulder straps was not as full/quality as the osprey, gregory or kelty. But good enough for my travel needs and comfortable. Though maybe not if you were doing an all day hike. If it was a little bigger or if I was bringing a little less it would have been the winner.
'06 Catalyst 35L - $90
Tested in store and at home.
Light. But not as light as UL30 or UL45. And no outside pockets at all.
This fit everything. Nearly equivalent space as REI UL45. The Support system and straps a touch better than the UL30, UL45. Also has the skinny/tall feel like the REI UL packs, which I felt was more comfortable and makes squeezing into airplane and trane
luggage compartment much easier. In the end, the lack of outside pockets and it being a touch heavier than UL45 was the reason it wasn't the winnder.
'06 Gregory Z-Pack - $190
Tested in store and at home.
This was a grade up in size and quality from the others. Very light. Lots of outer pockets with a big outside net pocket. I easily got everything into this with plenty of room to spare. I could fit 1.33 times my load.
Seemed to be very high quality. The support system and shoulder straps were a step up from the REIs. But it had a ton of straps. Straps everywhere. The staps were really a nuisance. I liked it and was very comfortable. But it was more than I wanted to pay and was also concerned it was to big to carry on a plane.
'06 Gregory G-Pack - $150
Tested in store.
I really liked the outside big net pocket. And like the Z-pack was of high quality. It didn't seem to fit as much stuff as the REI Catalyst 35L and maybe just as much or a little less than the REI UL30. Also seemed to be a little small for me. It rode real high on my back and didn't rest on my hips. The large of this seemed to fit like a medium of other packs.
'06 Osprey Atmos 50 - $200
Just looked at in store. Didn't put on and test. Looked great. REI didn't have a large on the floor. The REI staff were big on this model and a couple of them said they had bought one for themselves. But I was 1.5 weeks a way from my trip and couldn't take a chance on it not being shipped in time. The OSpreys were my favorite as far as style goes.
'06 Osprey Atmos 35 - $160
Tested in store. Had a fantastic support system. In a class by itself for the
support system. It was the first one I tested in the store so I was just getting
started in getting the feel of the packs. Didn't test at home with my exact stuff.
But based on in the store testing it seemed to hold less than other bags of the same
listed size. I say this based on how many of those 'weight' sacks that the REI staff
loads in the pack for you. You then go walk around the store for 15 minutes.
The REI UL30 and REI Catalyst 35L each fit more stuff than this bag. This bag would
not have been big enough for me.
'05 Kelty Redwing 3100 - $70 (on sale on REI.Outlet, normally $110)
Tested at home. This thing fit a ton. It's got a different configuration
than the other packs. This one is short and wide. The REIs were long and skinny.
The Osprey and Geregory's were in between. It easily fit in everything.
Fit as much as the Gregory Z-Pack, maybe more. Had good/enough outer pockets for my liking. At first, I though it was great. Had a comfortable shoulder straps and good support system. After a while though it seemed a little bit heavier than it should have. Maybe it was because all weight was outward, because of the short/wide style. I was also concerned that it was going to be too wide to fit into the overhead compartment on a plane or at least to big to pass the size test to get it onto the plane. I didn't want to take that chance. Though the REI.Outlet price was a great deal.
'06 REI UL45 - $100 - WINNER
This is the one that I didn't return.
Tested in store, at home and on a 17-day, 3-country, 4-hotel, 7-train and 4-plane
europe trip. Very light. Very durable. Very portable. Very comfortable. Not much in the way of outer pockets. The lack of outer pockets is its biggest fault. It fit everything listed above. But without much room to spare. Though I could have squeeze in a few more tshirts and didn't fully utilize the top pocket. Like the other REI packs I tested it has more of a tall/skinny style. That fit better for me and also seemed to carry the weight easier. It rested on my hips correctly. Not much in the way of bells and whistles like the Osprey and Gregory's. Only one outside packing strap that locked the cover to the top loading opening to the main body. But that's all I needed to get it tight and squeezed in. I thought this was a pro not a con. Whereas the Gregory's had straps everywhere. The UL45 also has an internal strap to compress the stuff in the pack. It's also on the UL30. Not sure if that made much of a difference, maybe a little. This pack and the UL30 had the ActivMotion support sytem which means the should straps on each side and the back suspension are one piece that moves together. I actually didn't think this was advantage for me. It actually seemed to make the pack more likely to be crooked on my back than the other packs. But not a big deal. And REI totes it as an advantage so maybe I was doing something wrong.
As I said above the REI packs seemed to hold more stuff than other packs with the same listed capacity. This was a big advantage. More space for your money.
Keep in mind that I generally did not have the pack on my back for more than 1hr at a time. Usually just from train station to hotel. Or walking between terminals in the airport. But during those times it was very comfortable, you forget it's on your back. Also very protable in terms of storing it in airplace overhead compartments and train luggage racks. I never had a problem. It fit with plenty of room to spare.
This would be the perfect pack for me if (in order of importance)...
1 it had an outside back pocket/net like the Gregory packs. and/or a little bigger outside packs
2 it had a water bottle holder pocket or any kind of pocket on the hipbelt
3 the support system was a little closer to the Osprey Atmos packs.
I highly recommended the REI UL 45. This pack has worked out great for me. I plan to use it on other trips and on weekend camping trips.
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