Osprey
Mutant 38
Based on 38 Reddit mentions
$139.95
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Most discussed features
Sentiment summary across the product areas Reddit users mention most.
Reddit mentions
Original Reddit posts and comments behind this analysis.
40L Mountaineering pack?
I love my osprey mutant 38. It can do pretty much anything you ask of it. Also, check out hyperlite's prism or crux packs.
Flimsy-Physics5391 in r/Mountaineering
December 1, 2025 1:31 AM
12
I can’t help but hoot & holler when I ski
Osprey Mutant 38 with the brain removed. I wouldn’t recommend it specifically for ski touring though—it’s more of an alpine climbing/mountaineering pack. I got it several years ago as a do-it-all pack because I was on a budget, and have yet to replace it because it works fine.
90degreecat in r/Backcountry
March 28, 2026 9:15 PM
5
Need help choosing the right backpack
Probably not helpful, but I picked up the Osprey Mutant 38L for its size and versatility. It has an external cover to tightly attach and hold a helmet in multiple places. It has external rope tie downs (I use my 70m with it). It has a removable top that adds more stash space. I can put everything in
...bdawgert in r/ClimbingGear
December 15, 2025 8:00 PM
5
Recommendations on alpine daypacks
I’m rocking the Osprey Mutant 38L. Not the lightest but made well, has a couple options for helmet carry, crampons on the outside and ice aces or tools. Can be stripped down or full use. Really impressed by it so far.
Landrvrnut22 in r/alpinism
February 9, 2026 11:01 PM
4
Anyone here purchased an Alpine Luddites pack?
I’ve taken a sewing class from him and made my own 50L pack (this was for Peru and longer alpine trips.) It was mostly motivated for the experience and knowledge gained, but I love that I could really add features, color and materials to make a unique lightweight 50L pack that had everything I wante
...SuperDuper98102 in r/Mountaineering
May 3, 2026 7:24 AM
2
Need help chosing a pack
Osprey Mutant 38 is a great option, and looks to be on sale now, easily under your budget. I've taken it on a six day trip as well as on day trips. If I'm just doing a day scramble I prefer to reach for a smaller pack, but the brain on the Mutant is removable so you can get it small enough to not fe
...LeanThrower in r/Mountaineering
August 19, 2025 2:48 AM
3
Mountain Hardware Crag Wagon 45L as a carry-on?
I often fly with my Osprey Mutant 38 This bag has flown domestically and internationally with me a few times now. I can pack a weeks work of hut to hut travel in it very readily, including harness, helmet, and a light mountaineering rack. I rented the skis and boots in Chamonix for this. The brain c
...JohnnyMacGoesSkiing in r/ClimbingGear
September 25, 2025 2:15 AM
2
Osprey Mutant 38L - 1 year review
I too own and use this bag much in the mountains. I added two shoulder pouches as well. Additionally I replaced the all the side compression buckles with sea to summit ones (my bag didn’t have buckles on top, as well as straps on the front of the pack. I used it primarily for winter hiking and ski m
...JohnnyMacGoesSkiing in r/Mountaineering
October 29, 2025 7:20 PM
1
40L Mountaineering pack?
If a cloth bucket with a strong frame is what you yearn for, I vote the Osprey Mutant 38. It’s got all the straps you need, is pretty lightweight on account of the dirth of features, and carries heavy climbing loads with the best of them. I have taken mine up to high places skiing in the Alps, trekk
...JohnnyMacGoesSkiing in r/Mountaineering
December 1, 2025 3:40 AM
1