Osprey Mutant 28 Rucksack

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This tough technical pack is the perfect climbing partner. On short alpine adventures the Osprey Mutant 28 is a dependable performer.

The Mutant has a highly tear and abrasion resistant nylon fabric with a reinforced base providing protection from rough surfaces and sharp tools. Rack your gear on the hypalon reinforced hipbelt loops, providing rapid access to your climbing protection. Carrying your axes on the Mutant with the ToolLock, provides a simple, light and effective axe carrying solution. The moulded and stiffened EVA back panel sheds snow but is also stable and robust.

For those of you who like to rough it overnight the Mutant has a trick in its internal sleeve in the shape of a tri-folding bivy pad, making that tiny rock ledge a little more comfortable. For the minimalist, lightweight explorer your can ditch the pad, remove the floating lid and reduce your pack weight by roughly 400g.

To make life a little easier you can reverse-wrap the hipbelt and utilise the 4 reinforced haul points to bring the pack up behind you on a tricky section. Each and every aspect of the Mutant has been proven and tested from Alaska to the Himalayas to ensure it has everything you need and nothing you don't.

  • Fabric: Nylon, 210D; triple ripstop nylon, 210D
  • Internal key attachment clip
  • Sternum strap with emergency whistle
  • Top lid access with removable lid
  • FlapJacket top cover for use without lid
  • 15mm side compression straps
  • Side ski carry
  • Abrasion resistant PU texture to front panel
  • Under lid rope carrying system
  • Integrated ski/climbing helmet storage
  • Hydration bladder compatible
  • Reverse wrap stowable hipbelt
  • Integrated gear loops on hipbelt
  • Glove friendly buckles
  • Removable top lid with dual compartments
  • Dual ToolLock for ice axe attachment
  • Removable HDPE framesheet with T6061 aluminium stay
  • Capacity: S-M: 26L; M-L: 28L
  • Weight:
    • Full: S-M: 900g; M-L: 960g
    • Stripped: S-M: 620g; M-L: 680g
Product Code: E1212193

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Santa Cruz California 1974. Mike Pfotenhauer sat at his sewing machine with a head full of ideas and a burning passion to build the most innovative backpacks to the highest standard.


Fast forward to 2015. One man’s vision has grown into a wide range of Osprey rucksacks and accessories that are being used from the highest mountains to the most remote islands and everywhere between.

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