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  • Updated materials and hardware create a lighter pack than the previous version; the lid, key straps and attachment points are all removable
  • Superlight Airspeed™ suspension features a 6065 aluminum frame and breathable 3D tensioned-mesh back panel with side ventilation
  • ExoForm™ shoulder straps include a stretch-mesh energy gel pocket and a 15mm adjustable slide sternum strap with a built-in whistle
  • ExoForm hipbelt features an ergonomic, forward-pull cinch closure that lets you get just the right fit; seamless layered mesh provides comfort and cushioning
  • Removable floating lid includes top and under-lid zippered pockets for stashing trail essentials within easy reach
  • FlapJacket™ lid deploys to provide main compartment protection from the elements and top-down compression to keep the pack load stable
  • Hydration-compatible design places the reservoir (sold separately) in a cavity behind the back panel for easy refilling
  • Ultralight, 7mm webbing compression straps on the sides take up extra volume with minimal added weight; route the straps over or under the side pockets
  • Sleeping-pad straps and a single tool attachment with bungee tie-off let you strap extra gear to the outside of the pack
  • Front and side stretch woven pockets provide handy spots for stuffing a rain jacket or water bottle; zippered hipbelt pockets give you a place to stash energy food
  • The Osprey Exos 48 Pack is made with 100-denier nylon and ripstop nylon for ultralight durability


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Best Use Backpacking
Frame Type Internal Frame
Ultralight Yes
Gear Capacity (L)
45 liters
48 liters
51 liters
Gear Capacity (cu. in.)
2,746 cubic inches
2,929 cubic inches
3,112 cubic inches
2 lbs. 6 oz.
2 lbs. 8 oz.
2 lbs. 10 oz.
Weight - Metric
1.08 kilograms
1.13 kilograms
1.19 kilograms
Fits Torso
16 - 19 inches
18 - 21 inches
20 - 23 inches
Fits Waist/Hips
27 - 31 inches
30 - 34 inches
33 - 37 inches
Material(s) Ripstop nylon
Frame Material Aluminum
Number of Stays 1
Suspended Mesh Back Panel Yes
Pack Access Top
Number of Exterior Pockets 4 + main compartment
Gender Unisex
Rated 5 out of 5 by from Worth upgrading to 2014 Exos I have a 2012 Exos 58 which I love, however, when I saw the new Exos 48, I thought I would give it a shot. The upgrades are amazing. The suspension, hip, and shoulder pads are greatly improved. I honestly felt like I was no carrying a pack this weekend and I had the pack loaded to capacity. I enjoyed the new exterior cinch down strap system, as well as the addition of the interior load strap. The easily removable top panel and additional panel flap are nice improvements as well. The new loops for keeping straps tidy are a nice addition, as are the new thumb hip belt adjustment loops. This pack is the most comfortable pack I've ever used. Osprey has thought of everything.
Date published: 2014-04-22
Rated 5 out of 5 by from thru-hiked the PCT in '16. Loved this pack! my base weight was a little over 10 lbs and I used this pack (without the lid) for the northern half of a 2016 PCT thru-hike. I loved it. I was using the Exos 58 (a LOT of people used that pack happily the whole way), for the first half but other than the high Sierra, it had way more room than I needed. If I did it again, I'd take the 48 the whole way and maybe just use the lid during the high Sierra bear cannister section. A lot of people had holes develop in the mesh pockets, but if you're careful where you set it down, you'll be fine. I just washed the pack off and after 1,300 miles, it looks brand new. Definitely use a waterproof liner if you'll be in any rain.
Date published: 2016-09-29
Rated 5 out of 5 by from Simply Amazing I have used this bag several times with some long mile days, loading it down with more than 25 pounds and it has performed phenomenally. It's so comfortable with that weight and every feature is just how it needs to be. The hip belts and shoulder straps are enough support, and breathe so well. The Airspeed suspension breathes well too, better than anything I've seen/used. Side mesh pockets are large and easy to use (fit an entire 1L bottle easily). Trekking pole attachment is a great feature. The Flap Jacket is great, I love not needing a large lid when you don't need it. I got the black and it looks great in person. I wouldn't put much more than 30 pounds in this bag though, not sure the shoulder straps could be comfortable with that much weight. I never want to take it off, and I plan on getting the new Atmos for longer trips.
Date published: 2015-02-09
Rated 5 out of 5 by from Great ultra-light pack! This pack is awesome! I'm currently using it on my PCT thru-hike. In the Sierra's all my gear including my bv500 fits inside expect for my bed roll (bivy, air mattress, tarp) which I strap to the bottom on the outside. The bear vault only fits inside vertical, it can not go horizontal. The straps on the bottom are somewhat small, but effective. I have not used the top lid at all. I find that the storage options that it provides are not necessary and I prefer the weight savings instead. The suspension system works nicely. I can put my water bladder where the airspeed back is and increase my storage capacity while cooling my back (think swamp cooler). The pack will help you to lighten your load and prioritize. It carries the weight of all my gear and a weeks worth of food, water, and fuel just fine (around 30lbs for my PCT hike.) For sizing information, use your torso measurement and not your waist. I fall in between a medium and large and found the large to be better due to the torso fitment.
Date published: 2014-06-20
Rated 4 out of 5 by from AT Thru-hike Took this pack on my AT Thru hike, like many other hikers. Almost half the hikers I met were carrying this pack, and for good reason. Light weight, easy to pack, quite comfortable with the trampoline back, even in hot humid weather. Could use more padding on the hip strap IMHO. Top zipper had a tendency to get stuck. Web mesh pockets couldn't stand up to Maines pine limbs that tore them up. True on the weight load, 35 lb comfortabley, and able to carry more with difficulty.
Date published: 2016-03-26
Rated 5 out of 5 by from Great Lightweight Pack I used the Exos 48 for a hiking season now, and very pleased overall with this Pack. This lightweight pack and my normal 3 season gear allows me to be under 15 pounds dry, and seldom over 24 pounds with food and water. It carries these loads with total easy and comfort to the point I hardly notice it. I use the size large (over 6'). There is considerable adjustment in the shoulder straps and waist belt that it’s easy to get it “dialed in” for a great fit. The waist belt is quite large, probably could handle 44” to 46” easily. The large rear mesh pocket is really handy for storing a few small things or stowing wet gear to dry out. The side “bottle pockets” are also mesh and pretty flexible, I can easily stow a jet boil in one. There are also some really handy pockets on the solder straps for stowing a phone/gps on the go. If you’re a relatively lightweight hiker (down bag, tarp or tarp-tent, small air-pad, & carefully selected clothing layers) this is a great bag to have. If you’re intending to carry more traditional gear and free standing tents I’d suggesting finding something larger.
Date published: 2014-11-05
Rated 5 out of 5 by from Excellent Bag I love this bag. I'm surprised there aren't more reviews! I was looking for my next bag to help me shed some lbs from my previous 3 Day Tactical Assault bag that was over 6lbs. My old bag had tons of pockets and compartments that seemed great at first but ended up just adding unnecessary weight and almost TOO much organizational options. This bag is very simple with only a few, but very efficient pockets and compartments. My girlfriend and I do 3-4 day section hikes of the PA Appalachian Trail. So far I've logged about 26 miles in this pack filled with roughly 23lbs and have yet to experience any sort of back discomfort. The trampoline suspension system that lays against your back keeps air flowing so your back stays cool with only a few points of sweaty contact area. The hipbelt and shoulder straps are a lightweight foam that gives an awesome amount of cushioning. I chose the 48L bag because my old bag was 65L and had so much extra room. Now that 95% of my gear is Ultralight I still have a ton of extra room in a 48L bag. This bag is small enough that you can use it for daytrips, large enough that you can pack it to the gills for a week long hike in the backcountry, and versatile enough to use it as your everything bag. I took it to Governor's Ball Music Festival in Manhattan and was able to hold everything we needed for a 3 day music festival. GET THIS BAG you will not be disappointed.
Date published: 2014-06-17
Rated 4 out of 5 by from Professional Use I am a professional guide and outdoor educator who works all over North and South America. This pack has traveled with me for two years now, racking up nearly 200 field days of use. Here are some of my thoughts. Comfort and Fit: The pack is very comfortable. I have the medium and it fits like great. I am 5'9" and about 180lbs. It rides well just above the hips and the hip belt is comfortable with no digging in. Durability: The pack has held up really well, with the one exception of the stretchy material on the pockets. It has worn through there in a few spots, but nothing that affects the function of the pack. Uses: While this is a "lightweight" backpack, I use it on regular 30 day wilderness trips as well as lightweight trips. If you keep the weight under 35lbs it carries like a dream, anything above that and it does get a bit uncomfortable. It isn't designed for heavy weights, so don't use it for them and you will love it. That being said, there were a few times where I loaded over 50lbs in it and it carried it. Not the most comfortable, but doable. What could be fixed: 1. The hook system for the top is nice, but the flap that covers the pack with the top off gets in the way with the top on. 2. The hip pockets could be a little further forward, which is an issue I have with most Osprey Packs. Would I buy it or recommend it? Yes.
Date published: 2016-03-14
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Does it have the "stow on the go" system for hiking poles that previous versions of this pack had?  I use that all the time so won't upgrade if its missing.

Asked by: sarahf
The video clearly indicates that the Exos has the "stow and go" feature.
Answered by: frazzled68
Date published: 2016-08-23

Would you recommend this pack for someone doing some extended traveling across Europe or Asia while not planning on doing a lot of camping?

Asked by: ppritch2
The Exos 48 is a great lightweight pack, however it is probably not the best bet for extended backpacking trips. While based on personal preference, packs with a gear capacity between 70 and 85 liters are usually a better option for extended trips.
Answered by: REIservice
Date published: 2017-03-16

Does the OSPREY EXOS 48 have a suspension system? The specs say no but the write up says yes. Thanks

Asked by: bonniebarg
The Exos 48 does have a suspended mesh back panel.
Answered by: REIservice
Date published: 2015-09-20

How many liters is it without the top?

Asked by: Seaneaglescout
According to an Osprey representative the lid capacity for Exos 48, regardless of size, is 9 liters.
Answered by: REIservice
Date published: 2017-01-27

where does one store collapsible hiking poles when not in use on the trail

Asked by: debeachguy
The Exos series packs have a trekking pole attachment feature that lets you attach your poles to the pack without having to remove the pack itself. The pole tips would slide through the gear loop towards the bottom of the pack while the trekking pole handles can be secured via the bungee attachment on the shoulder strap. The video posted on shows the trekking pole attachment in action.
Answered by: REIservice
Date published: 2017-03-13

How much does the brain weigh on this pack? Interested to know the weight of the pack without it. 

Asked by: MarcKB
​The floating top lid for the Exos 48 Pack​ weighs 4 oz. on its own.
Answered by: REIservice
Date published: 2017-03-03

Is the hydration sleeve inside the main compartment or separate, similar to other Osprey packs like the Viva?

Asked by: floridakayaker
The hydration sleeve is in the main compartment and can fit almost any reservoir.
Answered by: REIservice
Date published: 2017-01-26

Just wondering whether or not BearVault BV500 or BV450 can fit Exos 48. Thanks.

Asked by: Hiker2016
We were able to fit the BV500, vertically, into the Exos 48 pack in a medium size. It did take up a good deal of room, so taking the BV450 would be a better space saving option. Here are some links to the BearVault's mentioned:
Answered by: REIservice
Date published: 2017-01-29
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