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Osprey Mutant 28 Pack

Osprey Mutant 28 Pack is rated 4.6 out of 5 by 5.
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4.6 Star Rating

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Product Description Item No.   10255073

The Osprey Mutant 28 Pack is a lightweight pack for ice climbing, ski mountaineering and everything fast and cold. The Mutant 28 is a top-loading pack, ready for you to pile in the gear just like a bucket. Weighing in at only 2lbs (size S/M), you can pack it full of the essentials that will help get you up the mountain, and you can even strip the pack of the compression straps, helmet, and rope carry options to drop the weight by 10 ounces. Talk about fast and light adventuring. Strap your ice axes to the pack via the Dual ToolLock™ system and attach your skis in an A-frame for the climb up the mountain. Plenty of options in a small, light package.

FEATURES of the Osprey Mutant 28 Pack

  • Removable helmet carry system
  • A zippered pocket near the top of the Mutant pack stows a removable stretch mesh helmet carry system to secure your helmet to the pack when not in use
  • Removable side compression
  • A-frame ski carry
  • Harness
  • Hydration
  • Reverse wrap hybrid hipbelt
  • Rope compression
  • Suspension/Backpanel
  • Tool carry
  • Zippered top access

- + Product Specifications
Fabric Details: 210D Nylon Dobby
Product Technology: Osprey Airscape, Osprey Peripheral Frame, Osprey Framesheet
Weight Capacity: 40 lbs
Pack Capacity (Small / Medium): 26 liters / 1587 cubic inches
Pack Fabric: Nylon
Disclaimer: We only ship this brand to US Addresses.
Suspension / Stays: Aluminum
Weight (Medium / Large): 2 lbs 2 oz
Pack Capacity (Medium / Large): 28 liters / 1709 cubic inches
Dimensions: 22 x 12 x 12 in.
Weight: 34 oz
Weight (Small / Medium): 2 lbs
Gender: Mens
Features: Sternum Strap, Compression Straps, Detachable Lid, Hip Belt, Hydration Compatible, Ice Axe / Trekking Pole Loops
Best Use: Travel, Skiing, Climbing, Mountaineering and Alpine
Pack Capacity: 28 liters / 1709 cubic inches
Frame Type: Internal
Pack Access: Top
Hydration Capacity: Above 100 oz
Osprey Airscape

Osprey Airscape
Osprey's AirScape™ mesh covered ridge foam backpanels set a new standard in the industry. With its ability to keep the weight close, provide cushion, allow ventilation and add load carry is quite a list of needs from this unassuming backpanel. It successfully accomplished all of that in a way that allows it to be used in the large gear hauling packs and lightweight day hiking packs.

Osprey Peripheral Frame

Osprey Peripheral Frame
Peripheral frame was a departure from the norm many years ago and it’s still the foundation of our gear hauling packs. A wire frame runs along the outside of the backpanel directly connecting the upper load lifters and the central core of the pack to the hipbelt to transition and spread the load. Allowing natural torsional movement, effective adjustable torsos, and different load range and backpanel builds makes this suspension design truly innovative.

Osprey Framesheet

Osprey Framesheet
Whether connected to a peripheral frame on a big load carrier or as a standalone suspension on a day pack, a well-designed framesheet effectively spreads and transitions the loads across the entire body to the harness and hipbelt. With different material and stay options Osprey can make sure each individual pack has the right load carry for its intended use.

Men's Packs
PACK SIZE One Size X-Small Small Medium Large X-Large S / M M / L
Xenith - - - 18 - 21 20 - 23 22 - 25 - -
Aether (*excludes 60L) - - 16 - 19 18 - 21 20 - 23 22 - 25 - -
Volt 17 - 22 - - - - - - -
Atmos AG - - 16 - 19 18 - 21 20 - 23 - - -
Stratos, Manta AG (36L, 28L), Skarab (32L, 24L) - - - - - - 16 - 19 18 - 21
Kestrel, Talon, Kamber - - - - - - 16 - 20 19 - 23
Volt - - - - - - 16 - 19 18 - 21
Manta AG (20L), Skarab (18L), Raptor, Viper 17 - 21 - - - - - - -
Waypoint 17 - 22 - - - - - - -
Unisex Packs
PACK SIZE One Size X-Small Small Medium Large S / M M / L
Exos, Variant - - 16 - 19 18 - 21 20 - 23 - -
Escapist (*excludes 18L) - - - - - 16 - 20 19 - 23
Daylite 15 - 22 - - - - - -
Mutant, Radial, Farpoint - - - - - 15 - 19 18 - 22
Kamber Abs - - - - - 16 - 19 18 - 22
Rev Available in S / M and M / L. Select the size that matches your typical apparel size.
Zealot 15 - 21 - - - - - -
Syncro - - - - - 16 - 19 18 - 21
Women's Packs
PACK SIZE One Size X-Small Small Medium Large XS / S S / M
Xena, Aura AG - 14 - 17 16 - 19 18 - 21 - - -
Ariel (*excludes 75 / 55L) - 14 - 17 16 - 18 18 - 21 20 - 22* - -
Viva, Wayfarer 14 - 19 - - - - - -
Sirrus - - - - - 15 - 18 16 - 20
Kyte, Tempest, Kresta - - - - - 13 - 17 16 - 20
Mira AG (34L, 26L), Skimmer (30L, 22L) - 15 - 18 17 - 20 - - - -
Mira AG (18L) 15 - 18 - - - - - -
Skimmer (16L) 15 - 19 - - - - - -
Raven, Verve 14 - 18 - - - - - -
Kid Carriers + Kids' Packs
PACK SIZE One Size Age
Ace 75 14 - 19 11 - 18
Ace 50 13 - 18 8 - 14
Ace 38 11 - 15 6 - 11
Jet 18 13 - 17 8 +
Jet 12 11 - 15 5 +
Hydrajet 11 - 15 5 +
Moki 11 - 16 5 +

Please note that the info provided above refers to the torso size each pack will fit, and NOT any dimensions of the pack. Below are some steps for how to get your torso length. You should probably have someone help take this measurement for you so it is accurate. And they might accidentally touch your butt.

• Start at the iliac crest, which is the top of the hipbones on the side of your body. These act like a shelf for supporting a pack hipbelt.
• 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 you keep your back as straight as possible while measuring.
• This torso measurement determines what size Osprey pack you should carry. Refer to the size charts above to find your ideal size.
• If you are in between sizes, it is ideal to try them both on before ordering.

• Measure around your hips at your iliac crest, NOT your waist.
• A properly fitted hipbelt rides centered over the hipbones and needs to be very snug.
• The padded portion should wrap well around your hips, leaving a gap of 3 to 6 inches between the tips of the both hip pads when securely tightened.
• Refer to the Hipbelts size chart above to help determine your ideal Osprey pack size, but again, your torso length is what should determine your pack size, NOT the hipbelt.

Rated 4 out of 5 by from Fully Featured for Climbing Endeavors I've used the past and current generation of the Osprey Mutant and this is my favorite. This pack is always with me on ice climbing trips or when I'm visiting a sport climbing crag. It'll hold what you need it to, and the rope/helmet carry system works great. The "reverse bucket" opening makes loading bigger items like a rope or light trad rack easy. The pack carries well with lighter loads and does a reasonable job when you push the load limits. I do find it necessary to buckle the hipbelt behind the pack when wearing a harness. The ice tool attachment system, while fantastic for almost all tools, is a bit spotty if you have a larger gap in the head of your ice tool. Overall, a great pack that I use through all seasons.
Date published: 2016-02-17
Rated 4 out of 5 by from Great, versatile and light weight pack Great pack for all types of skiing. Thus far I've used it for recreational days skiing with family and for light hikes to fresh terrain. The bag is light weight and fits like a glove; I am 5'10 and initially ordered a S/M, however the bag was too short, I exchanged it for a M/L and have not been disappointed. ,,,,Most recently used the bag during a wet powder day and the bag repelled water impressively. Only complaint is that I wish the bag had a few more compartments inside, with the exception of one zip pocket on the lid the bag one large cavity, but this should not distract from the solid overall design and construction.
Date published: 2015-02-23
Rated 5 out of 5 by from All around, a very good pack. I bought this pack a month ago for climbing in the Northern Cascades. I am 6'4", and the M/L was a good fit (the waist best sat on my hips during the hike, and when cinched down for climbing, it brought the weight belt a couple inches above my harness). The pack was also very comfortable for the 6 hours of hiking to and from the climb. I particularly liked being able to secure the helmet using the integrated "webbing" when the pack was particularly full. I also felt the pack did an excellent job staying in place, even when going through a few chimneys. I can't speak for the durability since I've only taken it out on 1 real outing, but after having the pack on my back when worming up a few chimney's, I didn't notice any wear. Overall, I would highly recommend this pack.
Date published: 2016-07-25
Rated 5 out of 5 by from This pack is fan-freaking-tastic for its purpose. This pack is small but I can carry everything I need on a climbing trip. I enjoy taking people out climbing who haven't really done it before, so I have to carry all the gear. I can fit two pairs of shoes, three harnesses (complete with biners and ATCs), enough webbing for a big old toprope anchor, Nalgene, and a rope mat, with some room still to spare. Stick the rope on the outside along with the helmet using the straps they provide and you've got everything you need.,,It's super lightweight, yet still super tough. I've dragged it along the rock plenty and hauled it up after me with the sturdy haul loops and had no problems.,,I haven't yet used the ice axe or crampon or ski attachment system yet, but I assume it works perfectly, as does the rest of the pack. Great buy for the price. If you feel like it's still not enough room, and you want to carry a hand-mirror or something (it wouldn't be the first time I've seen that...), just get the 38 instead.
Date published: 2015-04-19
Rated 5 out of 5 by from Excellent An excellent sport climbing pack, big enough to hold all of the gear, clothes and food for a day at the crag. Then just use the rope cinch on the top and you are all set!
Date published: 2016-10-26
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It claims to have a hydration capacity of 100oz. How so? Does it come with a water reservoir already, purchase separately, pocket to put one in? Can't tell from the pictures.

Asked by: Texasgriller
Hey there, Thanks for the question! This pack has a sewn-in internal hydration sleeve that you can put a reservoir in. That reservoir would have to be purchased separately, and the sleeve can fit up to a 3 liter reservoir (which converts to roughly 100 fluid oz). For this pack, we'd recommend purchasing the Osprey Hydraulics Reservoir in the 3L capacity, though almost any reservoir 3 liters or under will work with this pack. I hope this helps.
Answered by: Rocko Gigsby
Date published: 2016-07-02
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