Ultralight Backpacking
This product qualifies for FREE SHIPPING and Easy Returns

Not currently available at any of our online partners
Complete the System
Add Item To Wishlist.


The Exos 58 is deservedly one of the most popular thru-hiking packs ever. Nothing matches their carrying comfort, and as the days and miles pass, you'll always look forward to shouldering the load. AirSpeed™ 3-D tensioned mesh backpanel keeps sweat down, strippable features satisfy the ounce-counters, and convenient features like Stow-on-the-Go™ trekking pole carry make ultralight backpacking ultraconvenient. Our All Mighty Guarantee means you can rest assured we've got you covered if anything happens on the trail. Stripped weight - 2.33lbs, 1.06kg. Read the great review of the Exos/Eja from Andrew Skurka at Outside Magazine.

Key Attributes


Ultralight design and materials plus the ability to strip weight by removing sleeping pad straps, compression straps and the top lid.


Tensioned backpanel keeps the weight in the pack off of your back, enabling highly ventilated carrying comfort.


trip the removable floating lid and replace with the fixedFlapJacket™ to protect your gear from the elements and minimize weight.

Additional Features

  • Removable floating lid with top-and under-lid zippered pockets for storing smaller items
  • Integrated FlapJacket™ protects packed gear when top lid is removed
  • Stow-on-the-Go™ trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands free
  • Dual access stretch mesh side pockets for storing water bottles and other gear with InsideOut™ side compression straps
  • Front stretch mesh pocket stores rain gear for easy access when skies darken, or wet gear after the downpour stops
  • Top lid web loop attachment points for external gear storage
  • Ice axe attachment with bungee tie-off
  • Removable sleeping pad and side compression straps
  • Accessory cord attachment points for external gear storage
  • Sternum strap with integrated safety whistle

Carry Information


  • 4mm( Lightwire) alloy frame
  • 3D-tensioned breathable mesh backpanel with side ventilation


  • Seamless layered mesh provides improved comfort and cushioning
  • 15 mm adjustable slide sternum strap
  • Stretch mesh energy-gel pocket


  • ErgoPull™ closure
  • Seamless layered mesh provides improved comfort and cushioning


Load Range
20 - 40 lbs.
10 - 18 kg
  Volume Dimensions Weight
SM 3356 in3 / 55 l 29.53h x 16.14w x 14.57d in. 2.63 lbs.
MD 3539 in3 / 58 l 31.5h x 16.14w x 14.57d in. 2.65 lbs.
LG 3722 in3 / 61 l 33.46h x 16.14w x 14.57d in. 2.68 lbs.
SM 3356 in3 / 55 l 75h x 41w x 37d cm 1.19 kg
MD 3539 in3 / 58 l 80h x 41w x 37d cm 1.2 kg
LG 3722 in3 / 61 l 85h x 41w x 37d cm 1.22 kg
100D High Tenacity Nylon
100D High Tenacity Nylon Triple Check Dobby
210D High Tenacity Nylon
Product Manual Additional languages available here �


Drag to Rotate

Integrated FlapJacket™

Integrated FlapJacket™ protects packed gear when top lid is removed

Front stretch mesh pocket

Front stretch mesh pocket stores rain gear for easy access when skies darken, or wet gear after the downpour stops

Ice axe attachment with bungee tie-off


InsideOut™ side compression straps

Dual access stretch mesh side pockets for storing water bottles and other gear with InsideOut™ side compression straps

Internal hydration reservoir sleeve

Internal hydration reservoir sleeve accommodates up to a 3L reservoir

Removable sleeping pad straps


Stow-on-the-Go™ trekking pole attachment

Stow-on-the-Go™ trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands free
Try our new Packfinder
Find the ideal pack quickly
and easily by answering a few simple questions


Almost as Good as the Prior Generation


Please bring back the hip pockets, and make them about .75 liters each. Also, more colors please, specifically blue. ...I'd like buy the prior generation in blue/silver please, with modern graphics, similar to the lastest generation.

Augusta, GA


Awesome backpack....


After trying several bags like ZPacks Arc Haul, Seek Outside Divide, Osprey Atmos, Gregory Baltoro, ULA Catalyst, Kelty external frames - Trekker, TIoga, I finally wanted to give the Exos 58 a shot. A year back, I had moved away from the Exos 58 as it hadn't have the torso adjustment and was trying to get backpacks with torso adjustment. Boy, am I glad I got this bag. I loaded it with 39 lbs (including 6 days of food in Bearikade Blazer and 5 liters of water) and took it out to River Place Nature trail in Austin, Texas. The bag passed with flying colors. No shoulder soreness or back issues. I was able to climb the 1500 steps easily and run down the 1500 or so steps the trail has. I think lots of folks probably are not getting the right size. If I went with my torso size, I should have got the medium. But, since I like to wear the hip belt a little below, I went for the large and the bag fits me like a glove. I love the fact that I can have 2 liter Platypus bags on the lower side pockets for a total of 4 liters. Then I can stow the Nalgene 1 liter as well into the side pockets at an angle without any issues. I was able to retrieve the Nalgene while hiking. I usually place my bearikade vertically towards the top of the bag. But, I am trying something new this time by placing it at the bottom of the bag. The backpack seems to be able to stand on its own with this setup which is a plus. I keep a sitpad at the bottom of the front mesh so that the backpack doesn't touch the ground. In fact, the way the frame is, the bottom of the backpack doesn't touch the ground except for the two legs at the back. There is space to place small items around the bearikade. I love the brain which has more storage area - two zippered compartments where I keep my kettle with the stove, USB lighter, gas canister inside the kettle. My tent stakes as well are there. The front mesh pocket has my rain gear, food/snacks for the day. This way, I never have to open the bag. Awesome bag!



Hip belt Pockets is a must!


Bought it and returned it. Love the exos but, eliminating the hip belt pockets is just so WRONG! Please put it back so I can buy it.

Los Angeles


Incredible comfort in a lightweight pack


I have wanted an Exos for years now, and finally bit the bullet. I originally had an Atmos that was too large and ended up being uncomfortable after some weight loss. I took my new Exos pack out on an overnight hike with ~11kgs (including the pack) and it was amazingly comfortable. Normally I'd be fiddling with all the straps to dial in the perfect comfort, with the Exos I just throw it on and it's perfect every time. I tried it on in store with a total weight of ~15kgs and even then it still felt quite good. The giant pockets on the side are my favourite feature. The lack of hip belt pockets is only a minor annoyance.



One of the best packs out there


I own several packs and I always end up coming back to two packs for virtually all my trips. One is this pack, the other is aether 85 AG. Don't listen to the other reviews; they clearly don't understand the purpose of this pack. This pack never stops blowing me away. It is extremely well made. The design is clearly well thought out for the minimalist in mind, without sacrificing durability, As long as you keep the weight under 50 lbs (45 lbs is my most comfortable) you'll have a comfortable hike.



wish it was lighter! lol just kidding


amazing bag, anyone who says otherwise should be brought out back like old yeller

toronto canada


Great pack, but why cut down on organization?


I have the original Exos 58, purchased about a year after the line was introduced. I used it for about ten years on everything from summer weekends to week-long routes requiring a bear canister. It performed nicely well beyond its 35-lb. ideal load. The large cross-section of the main bag, combined with some flexibility in the fabric, provides more usable capacity than packs rated at 65 + liters, allowing the user to arrange items in a variety of ways to optimize weight distribution. The lightweight straps and belts look flimsy but always proved durable. Overall, it was an 2-1/2-pound pack with the chops of a 5-1/2 pounder. Achieving a light load is a lot easier when you start three pounds lighter. I would rate the original iteration of this pack 5 stars. The current design, however, falls far short. In a re-design several years ago, the company eliminated the vertical zipper pockets located on either side of the front panel. Other Osprey products, including the Atmos, retain this feature. These pockets were invaluable for organization, allowing the user to find small items easily. This was especially useful in a pack in which the main storage area is a single undivided bag. Removal of these pockets could not have saved much weight but did seriously damage the functionality of the pack. I would love to replace my Exos 58, but with the new design, I can't without abandoning tried-and-true organizational methods.

Columbia, SC

Six days


In the desert Southwest we typically go on six day trips, mostly grand canyon stuff. However, our latest was the the Paria River canyon - 38 miles. The water is tough to filter so on two of the nights we had dry camps where we carried extra water. That, with the extra pair of water shoes, brought the pack load up to about 44 pounds. At the finish I was below 30. I would say a good comfortable max weight for this pack is around 34. I have used the pack on about 8 trips now. This is a stunningly good pack. My old pack weighed 5.5 and this one (Large, I am 6'3') is at 2.5 lbs. The mesh back really works and I find it easy to load and carry. I would not trade it, I would not attempt to go lighter, it is perfect.



Excellent product and awesome warranty service


I got Exos 58 3 years ago. I asked to purchase extra buclets. They sent to me free of charge. 1 year ago may be kind of my fault the Internal frame was broken . I asked to purchase a new frame. They told me that warranty will cover it . Because they do not keep frames in stock they gave me a brand new back[ack without any additional charge. Non only that. Someone noticed that in my old back back I had done a custom extension in the belt. Geus what. The new backpack had new belt on the right length based on my custom made betl. Back pack is great . This kind of service makes me customer for life.

Kamloops BC


Very comfortable UL pack with good design features


I have used this pack for both 3 season use with up to 35 lbs. and for hunting with a heavy (50 lb.) load with a fair amount of comfort. In fact when loaded to 30 - 35 lbs. is is even more comfortable than my old 7 1/2 lb. monster Dana Designs Terraplane. Osprey has done an excellent job of designing this pack for years of comfortable UL backpacking. Unlike some UL packs the Osprey EXOS series is made of light but durable materials and fabrics. The removable lid has been converted by this owner to a fanny pack by sewing on belt loops to the under side. This should have been designed from the start.

The Las Vegas valley



4.5 23


Notify Me