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Osprey Packs Exos 58L Backpack

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19 Reviews


A minimalist's dream come true.

The Osprey Exos 58 Backpack has space for your backpacking trips in summer and ice climbing trips in winter, and it'll carry your gear without adding excess pack weight to your trip. A combination of the AirSpeed back panel and the light yet durable 6065 aluminum frame brings a lot of breathability by dumping excess heat out of the sides. ExoForm covers the shoulder pads and waist-belt with mesh and energy gel for the ideal blend of breathability and comfort while you hike. This pack features a removable top lid with two zippered pockets for short day trips during your trip, and the integrated FlapJacket protects your gear from rainy, poor conditions whether the top lid is attached or not.

The Exos 58 also features two mesh side pockets for water bottles, two zippered pockets at the waist-belt for any small item you might need on the trail like sunscreen or lip balm, and a front stretch mesh pocket for maps, books, and a compass. It also has straps for a sleeping pad, and you can remove both the sleeping pad straps and the compression straps when you're going super light. There's an attachment loop for an ice tool or two, and a tie-off point for excess gear.  

  • AirSpeed back panel with 6065 aluminum frame
  • ExoForm shoulder straps and waist-belt
  • ErgoPull closure at waist-belt
  • Top access
  • Removable top lid with two zippered pockets
  • Integrated FlapJacket
  • Two mesh side pockets
  • Two zippered waist-belt pockets
  • Front stretch mesh pocket
  • Removable sleeping pad straps
  • Ice tool attachment loop
  • Removable upper compression straps, lower InsideOut straps
  • Cord tie off point
  • Item #OSP000V

Tech Specs

[pack] 100D high-tenacity nylon, 100D high-tenacity nylon ripstop, [frame] 6065 aluminum
[small] 55L (3356cu in), [medium] 58L (3539cu in), [large] 61L (3722cu in)
AirSpeed back panel
Shoulder Straps
Hydration Compatible
[pack] 2 zippered waist-belt, 2 mesh side, 1 stretch mesh front, [top lid] 2 zippered
Sleeping Bag Compartment
Rain Cover
yes, FlapJacket
28 x 13 x 12 in
Claimed Weight
[S] 2 lb 5 oz, [M] 2 lb 6 oz, [L] 2 lb 8 oz
Recommended Use
weekend backpacking, ice climbing
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Lightweight and Capable

  • Familiarity: I've used it once or twice and have initial impressions

Have done some preliminary testing with this and wanted to see it's initial capabilities. The pack is durable and fits a lot more than you'd think. I was always hesitant to go with Osprey but needed a mid-range lightweight pack for shorter trips. This hit the spot. The only downside I have experienced is that the tightening straps are very thin and get twisted easily.. It's not a deal breaker they just feel different from the normal width straps you're probably used to. takes a little getting used to but I like them. There are no separation compartments but this is meant to be lightweight so if you're looking for that, look elsewhere.

Love this pack

  • Familiarity: I've put it through the wringer

I got this pack about 9 months ago and find it to be very comfortable, lightweight and well made now that I've used it for multiple trips. A backpack is a very personal thing and one model may not suit everyone. I've been backpacking since I was 11 and I'm now 61 so I've had a lot of backpacks over the years and so far this is one of the best I've ever used. My other favorite is my old 1978 Kelty D4 frame pack which only weighs 3 lbs (Kelty has lost their edge!). Over the last few years I've embraced the ultralight philosophy so the most I've ever carried in this pack was 22 lbs for a 3 day trip. I'm not sure how comfortable it would be at over 30 lbs but at 22 lbs it was very comfortable. All my backpacking friends now have "pack envy" when they see how little weight I carry compared to them and their packs that alone weigh 8 lbs. I highly recommend this pack and would buy it again.

Osprey Listens to their Customers

  • Familiarity: I've put it through the wringer

I owned the previous version of this pack and used it on my AT thru hike in 2015. I had no real complaints about it, and was generally very happy with my purchase. By the end of the hike however, the back "airspeed" mesh had developed a hole in the center, as well as in the corners by the hip-belt. The hole in the center was due to the two metal rods that stretched across the center of the pack. Another feature that was lack-luster were the hip-belt pockets, and the clunky removable "brain." About halfway through my hike, I had shed enough gear (as most thru-hikers do) to ditch the top of the pack. It was all fine and good, and the pack took me to Katahdin with no troubles.

Enter the new Exos. Every single thing that went wrong with my pack over the course of my thru-hike was updated on this newer version. The metal rods in the back were changed to a single plastic sheet, and the mesh near the hip-belt was changed to a solid fabric. The hip-belt pockets are now huge and stretchy, and can accommodate much more than their predecessors. The "brain" now removes with a few buckles, and there is a flap to cover the top of the pack. The shoulder straps also were reinforced and more cushioning was added. It was as if Osprey looked at my worn out pack, and just fixed everything. They clearly listen to customer feedback, and by using the millions of miles of customer use as r&d, they are able to deliver a premium product. Many of my friends had the updated version of this pack (the one I am reviewing here) and not one of those old problems was had during the five months they spent on the trail. Their packs arrived to Katahdin a little dusty, and a little smelly, but no worse for wear and tear. Mine arrived to Katahdin looking like it had been carried 2200 miles (duh). This is currently the most popular pack on the Appalachian Trail by a long shot, and for good reason. The thing is light, comfortable, and will never let you down. If it does let you down, Osprey will stand behind their product.

I don't know what all the hubbub is about

  • Familiarity: I returned this product before using it

So I wanted to lighten up my gear I own a 2015 vs of the Gregory baltoro 75 L so I am familiar with comfortable packs . I bought this pack from backcountry loaded it up 30 lbs with gear to assure I was fitting it correctly, it didn't feel right like the weight was on my shoulders and the curve is causing the weight not to be on my hips much, despite tightening the belt as much as I could . I actually went down to the store and made sure that I was fitting it to myself properly with the gearheads help. The way the pack designed it doesn't take all the weight to the hipbelt . The curve in the back of the frame actually forces the weight onto your shoulders more and less on your hips resulting fatigued shoulders and when I tried to take the pressure off via the load lifters , the load tilted back causing uncomfort in my lower spine, so I returned this pack. If osprey wants me to buy this pack, they would need to get rid of the airgap curve , that thing is a gimmick anyway everybody's back sweats reguardless of whether the pack against your back or has an air curve, anything that curve does is allow the sweat to dry faster . I tried on the Hyper light Mountain Gear Wind Rider 3400 for frameless pack that weighs 1 pound I was surprised how comfortable that pack is despight not having a real back frame ,it has aluminum stays in the hip belt that cause the weight to be carried (packed it with 40lbs In store) by the belt, a really comfortable pack, only criticism of HMG I would have to make sure my pad or something smooth would have to act as a back frame-creative pack loading or get a gossamer gear nightlite or sitlite pad insert it as a back frame. I found my ultralight pack unfortunately it's not Osprey EXOS 58 !

The Start of My Osprey Love Affair

  • Familiarity: I've put it through the wringer

Before I picked this pack up I though one had to compromise between weight and features. I bought it on short notice for a 5 day trek through the Tetons before I had a chance to test it on a shorter hike. Right off, the required bear canister slid perfectly into the main compartment. From there I only became more and more impressed. A perfect balance between minimalism and utility. Lightweight, fully featured and sporting what is basically a unique sort of external frame, this thing has everything you need and nothing you dont. My favorite features are the dual hipbelt pockets, the breezy trampoline mesh back panel, the stretchy stow pocket perfect for rain gear/ extra layers and the ability to stow your trekking poles without breaking stride. Technically a weekend pack, it comfortably handles loads in the mid 30s and up. And when nefarious desert rats chewed the mesh panel seeking the salt from my sweat, Osprey fixed 'er up good as new. The picture below is a close-up of the Airspeed mesh back panel.

The Start of My Osprey Love Affair

Lightweight, great fit, expansive

  • Familiarity: I've put it through the wringer

Used this pack for four days on the John Muir Trail and it was perfect. It fits a TON of gear. It is super light weight and fits me better than any pack I have ever owned, more comfortable too. I recently took it up Pico de Orizaba and Ixtaccihuatl in Mexico. Again, it served me well, but it is not built for alpine mountaineering. It's starting to show some wear and tear but it's understandable considering it wasn't really designed for ice axes and crampons. Highly recommend it for traditional backpacking trips and the Osprey return/repair policy is beyond reproach.

great lightweight pack, recommend!

  • Familiarity: I've put it through the wringer

I love this bag. It is so light and yet does not compromise much in features or durability. Had this pack for two years and hardly any blemishes. Thats my little brother wearing it when we went to Glacier over summer.

great lightweight pack, recommend!

Osprey Exos 58

  • Familiarity: I gave it as a gift but have feedback to share

I gave this as a gift, but initial thoughts are... It's lightweight, fits great and should be enough space for all the gear.

Fits like a glove

  • Familiarity: I've used it several times

Have done several hikes with this pack. It's by far the most comfortable pack I've ever worn. its virtually impossible for your back to sweat with this pack. I like all the adjustments, pockets, wide hip belt, and how it stretches to accommodate larger loads and compresses for smaller ones. Its pretty much glued to your back, once its properly loaded and adjusted. So it doesn't shift around when find yourself climbing over or under obstacles.
The only modification I could suggest, is to the lower corers of the frame. They tend to bruise the top of my glutes, while walking. I've solved this by packing my rain coat between the pack and the mesh back. But, not everyone will have this issue. I actually haven't met one other person yet, with this pack, that has (so it's not you, it's me).

For me, this is the ONE!

  • Familiarity: I've put it through the wringer

Exos 58 review:
I've walked over 2000 PCT miles since March, using packs by Ray Jardine, ULA, three packs by Osprey and an REI pack. I listened in disbelief when users of this pack said they never sweat on their backs. Now, I believe. I used this pack for 430 miles. This is my pack. I found mine in Pacific Blue discounted to $165 here at Backcountry in August. this pack had everything I wanted and nothing I didn't.

*lightweight and comfortable with great balance and no surprises in action. You zig, it zigs; you zag, it zags; you zig-zag, it doesn't keep zigging, it zig-zags.
*It weighs a mere 2 oz more than the Exos 48.
*Many pockets for organization, including 2 hip pockets, 2 shoulder strap pockets, 2 lid pockets, 2 large side pockets, 1 large front pocket. *It actually has 9 pockets, as the lid has a document pocket on the underside. If one uses the hydration sleeve, it has 10.
the big pocket on front for wet stuff.
*Easy access to water bottles in pockets on both sides without removing pack or surgery.
*Great ventilation. Other packs made me sweat so much that it spread to my shorts!
*The pack didn't hurt my shoulders when used without wearing a shirt.
*It felt great for my load (up to 31 lb. I didn't go above that)
*Hip belt had a "keeper" so the extra strap didn't dangle where I might whiz on it. It also didn't have a yard of excess on each side as did the Atmos 65AG. They made the Exos for the thinner than average person, whereas they made the 65AG hoping it'd fit EVERYone from Olive Oyl to Jabba the Hut.
*Osprey's guarantee.

*For me, only one. The hip belt pocket didn't swallow my big smartphone. No biggie.

My gear: hoodless sleeping bag, hammock/tree straps, tarp/stakes, hammock underquilt, sleeping clothes, long sleeve shirt, fleece shirt, thermoball jacket, buff, down pants, sleeping hood, up to 5 days of food (~8 lb), up to 3 liters of water (7 lb), ACR personal locator beacon, deLorme inReach, Stove/fuel/saucepan/spoon, small first aid kit, Deuce of Spades & tp, raingear, GoLite umbrella, Black Diamond Distance Carbon Z trekking poles, mittens, Goretex gaiters, dust gaiters, water treatment (Aqua Mira), smartphone with Halfmile PCT app, backup battery, charging adapter, single cell AAA flashlight/spare battery, small REI pack towel.

I was going to modify my daughter's Kelty external frame pack to improve the ergonomics, but I like this pack too much not to just buy her one.

Osprey Exos 58

  • Familiarity: I've used it several times

I purchased this last year and have taken it on two trips. When I am carrying more gear for the younger members of our family, I carry the slightly larger Osprey Volt. The Exos 58 is very comfortable! I carried a max of 25 lbs in it. I like the airspeed suspension system. Easy to adjust and get a good fit, just like my other Opsrey packs. I like the zippered pocket under the lid for storing items I deem essential and want to find quickly

Osprey Exos 58

Osprey Exos 58

  • Familiarity: I've used it several times

This bag is great with weights under 30 pounds. Has plenty of room for my gear. The bag is as simple as you can get. NO unnecessary compartments adding more weight. A lot of people complain about the shoulder harness and waist belt material, I haven't had any issues with fit nor feel of the material. You can remove the brain part of the bag to save weight. It comes built in with a built in piece of fabric that allows you to seal up the bag after you remove the brain. I love the mesh side pockets that allow me to place my water bottles at an angle for easy reach. The compression straps are really thin compared to other bags. They seem to do a great job compressing the bag. I am very fond of the mesh back with the external wire frame. My back feels so much better after hiking. I have less sweat on my back for sure. You do have a stow away for the trekking poles, but I find that I never use this feature...This pack isn't made for everyone. In the end, my pack weight with three days of food and 1 L of water come in at around 24 pounds.

Is it not so great when you are carrying 40lbs? Would love to know your thoughts.

With snow expeditions (crampons, flukes, harness, etc)/glacier travel my pack is more than the 30 that folks are stating.

Great UL Pack That Stands Abuse

  • Familiarity: I've put it through the wringer

I bought this pack originally for UL backpacking, for which it works great. So far I have used this pack around 20 times over the last 2 years, I retired my old alpine pack during this time and was reluctant used this in such abrasive conditions until I bought a new one. It has been up Rainier twice, Shuksan, Stuart, as well as numerous other NW mountains. So far that combined with all of the regular backpacking trips it has been on, there are no bad wear spots in the fabric, all zippers are intact, and it rides like it did when I first got it.

I'm 5'9" and 200 and the medium fits very well. The pack sits very comfortably on my hips and back and for such small compression straps really squeezes the load down well to fit towards my center of gravity. It even rides pretty well and balanced with ice axes etc. on the way back. The hipbelt pockets are really easy to open and reach.

My only minor complaint is that there is not quite enough room for me to fit a 3L bladder between the backpanel and pack and the side compression straps have no buckle to save weight, so attaching items to the side can be a little hassle. Other than that, all features have worked magnificently even when used in conditions I believe to be a little harsher than it was built for.

Great UL Pack That Stands Abuse

3 days out on the Clackamas river

Carried about 25 lbs for a 3 day camping trip and was able to cruise up steep ravines and down to the river with no difficulty. This is the best back I have ever experienced - lightweight, balanced, and comfortable. It is extremely adjustable and loaded with storage options that make it easy to stay organized. I love the way a Platypus stores between the back mesh and the body of the pack so you lose no storage, and there is a way to store hiking poles on the go. It is an attractive color that still manages to blend in, and the material appears rugged. Lovin UL backpacking and hammock camping with this pack!

3 days out on the Clackamas river

Osprey Exos 58 Backpack Rocks!

  • Familiarity: I've used it several times

Last fall I carried this pack (last year's model) for 38 miles x 6 days - mostly above 12,000' - in Colorado's South San Juan Wilderness. Fully loaded on the first day, my pack weighed 31 lbs and the Exos 58 carried the load nicely.

Osprey built this pack to be a super-lightweight, full-featured pack. My size large weighs in at 2 lbs, 12.2 oz and, other than low weight, I wouldn't call this a "minimalist" pack (look at the bullet point list of features above). I thought the previous model's zippered, mesh waist-belt pockets were too big / too floppy and Osprey addressed that with their current model. I wouldn't use the elastic shoulder strap pockets, but no star deduction for that feature here.

I'm a big proponent of using 55 - 60 liter capacity packs for week-long trips. My other pack in this category is Gregory's excellent z55 (also received an update for 2014). My older z55 weighs 14 oz more than the Exos 58 but carries the load a little better at the heavy end of the spectrum. I'll likely choose the z55 for 6- and 7-day trips and the Exos 58 for 3- and 4-day trips. (Looks like it's gonna be a fight to see who gets to go on the 5-day trips!)

Photo shows "gear dump" at Bear Lake camp site in Colorado's South San Juan Wilderness.

Osprey Exos 58 Backpack Rocks!

Great review! I have a GoLite Jam 70 and it feels terrible with 35 lbs in it. My Gregory Baltoro 75 on the other hand feels like a dream with 45 lbs! I'm seriously considering the Osprey Exos for my 19-day JMT trip next month. Question; Do you really take that horseshoe with you or is it just there for reference?

This pack has a removable top lid with two zippered pockets for short day trips. Does the lid have a sling for your shoulder and waist, like other popular brands?

Christopher - My apologies for the delay in my answer. Yes, the lid is removable. No, it is not designed to be a day pack. hat would require us to add extra straps and buckles that add extra weight to this minimalist pack. So we opted not to. Our series called the Xenith / Xena and the Aether / Ariel both allow for a top lid daypack option.

Thank you for the question.


Osprey Rep

How does this pack peform with 30lbs+

Hi Preston, great question. This is my go-to pack as I am a bit of a minimalist but have overloaded it to about 40 lbs with no troubles whatsoever. Hit me up to discuss your exact needs and requirements and we can make sure to get you into the right pack.

Could a small framed woman use this pack? I'm usually a small in the women's packs, but there doesn't seem to be a women's version of this pack. Thanks!

Best Answer

Leah, what's your torso and hip measurement?

How to Measure:

For best results, have someone take the measurement for you.


Start at the iliac crest (the top of your hipbone that you can feel like a shelf on the side of your body). From this level on your spine, measure to the C7 vertebrae, the knobby bone at the base of your neck when you put your head down. Make sure to keep your back straight while having the measurement taken.


Measure around your hips, at your iliac crest, not your waist.

Hey Leah,

Jimmy is right on here. A small MIGHT work... it will be close! I am a 15 1/2 " torso and the small is too big for me. As far as the women's version, stay tuned... it might not be that far away! I will pass your feedback on to the folks at Osprey.



Osprey Rep

How much weight can this pack carry?

Hey Maggie, Kyle is right on. The suspension (skeleton) of the pack can carry alot, but the lightweight aspect of the harness and hipbelt make this pack best when performing with 30-40 pounds of gear.



Osprey rep