Mutant 28 Osprey Ascent Bag

The Mutant 28 is a very compact and very light bag that has a multitude of functions for summer and winter use.
In winter, the back panel prevents snow from entering the bag. The side loops allow you to attach skis and the attachment of the ice ax is quick and secure thanks to the ToolLockTM system.
For use in summer, it is possible to remove certain elements specific to winter in order to reduce the weight of the bag by 280g.
The straps of the bag are ventilated and thus avoid perspiration during the effort.
The bag has very useful pockets, one above to carry a rope and a zipped pocket under the flap.

Mutant 28 Specifications:

• Sternum strap with whistle
• Integrated space for ski/climbing helmet


• Double ToolLock™ ice ax attachment


• 15mm side compression strap
• Abrasion resistant PU texture front panel
• Glove-friendly buckle
• Waistband gear loops
• Internal hydration sleeve
• Interior key clip
• Removable HDPE frame with T6061 aluminum rod
• Reversible sewn-in belt with the possibility of storing it if necessary
• Ski rack on the side
• Pocket above incorporating a rope carrying system


• Zipped pocket under flap


• Top access with zipper


Help with choosing the size:




Technologies used:

• Access to the zipped bag


ToolLock™ ice ax attachment system


• Rope carrying system