icon ultraliteUltralight

The Reactor 25 Ultralight is designed for the weight-conscious backcountry enthusiast looking for a higher volume pack.

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The R25-UL’s simple lines and ultra-lightweight design provide it with an incredible weight/volume ratio without having to compromise on functionality. This backpack will appeal to fast-touring enthusiasts looking for a compact, lightweight, and technical airbag pack.


  • 960 g
  • 1720 g with system


  • Volume: 25L
  • Opening system: Front access
  • Belt: Ergonomic belt with single pocket
  • Equipment carrying: Skis (diagonal) / Snowboard / ice axe
  • Helmet holder: Compatible
  • Size adjustment 3D fit technology: OK
  • Directable and height-adjustable handle: OK
  • Key attachment clip
  • Safety pocket: attachment
  • Hydration pocket: Compatible
  • Goggle and valuables pocket: OK
  • Back foam plate: Light foam padded back system
  • Backpack materials: Cordura 210D double ripstop /Polyamide 210D double ripstop
  • Highlight: Ultra-Light
  • New airbag compartment closures.
Transferable airgab system
Easy transfer of the airbag system in another REACTOR backpack
Arva Reactor 25 Ultralight Transferable
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