Osprey Mutant 38


small medium large
Weight 2 lb 13 oz / 1.27 kg 2 lb 14 oz / 1.30 kg 2 lb 15 oz / 1.33 kg
Stripped weight 2 lb 0 oz / .91 kg 2 lb 1 oz / .93 kg 2 lb 2 oz / .95 kg
Capacity 2100 cu in / 35 L 2300 cu in / 38 L 2450 cu in / 41 L

Manufacturer's Description

Visit Osprey's Mutant 38 page.

Retailers' Descriptions

Here's what other sites are saying:

High on a ridgeline, winds swirling around your perch, the stability of your pack and gear is of paramount importance--that's why a pack like the Osprey Mutant 38 Backpack is so important. Support and stability come in the form of a removable HDPE framesheet, a removable aluminum stay, and an AirScape back panel that also ventilates as you climb. This top-loading pack features a removable floating top lid to lighten your load for summit day. When removed, you can protect and secure your gear with the FlapJacket closure system. To help you haul everything you need, Osprey added its Mutant Dual ToolLock ice-tool system that lets you securely carry, and remove, tools when needed. Side compression straps let you secure your load if it's not quite full, and the A-frame ski carry makes sure that you can get down off the top the fun way. To help keep you from overheating on the way up you can store your helmet in the removable helmet-carry system up top.

- Backcountry.com

Designed for fast-and-light alpine climbing, ice climbing and ski mountaineering, the Mutant 38 is perfect for vertical enthusiasts who are looking for a streamlined, lightweight pack.


The Osprey Mutant 38 Pack is a top loading bucket style lightweight pack designed specifically for the alpine climbing/ice climbing minimalist. The Mutant 28 has a fixed, reverse spacer mesh die-cut foam harness is designed specifically with stability, carry and comfort in mind. An adjustable sternum strap with rescue whistle buckle provides proper torsional stability while reservoir hose routers keep hydration accessible and at the ready

- CampSaver.com

The Osprey Mutant 38 Backpack is a minimalist alpine climbing/ice climbing pack that's perfect for those days in the ice park as well as the one day alpine climbs.-- Removable helmet carry system-- Removable side compression-- A-frame ski carry-- Harness-- Hydration-- Reverse wrap hybrid hipbelt-- Rope compression-- Suspension/Backpanel-- Tool carry-- Zippered top access

- OMCgear