A2 Challenger

A2 - blue  p201220add1  A2 - orange

Building on the legacy of the iconic H2™ pack, the new A2 CHALLENGER™ takes over as the hydration  king of  2hr+ offroad racing. The new 3.0L Shape-Shift™ bladder keeps water from sloshing around while its super wide opening makes it easy to add ice and turn inside-out for cleaning. The pack is equipped with the revolutionary NDMT™ harness which secures the pack on your back without affecting your body movement or performance.



  • NDMT™ (PAT.PEND) 4-point suspension harness
  • Multi size adjustment for individual fit
  • 3,0L (100oz) Shape-Shift™ Bladder
  • Big flow 45 degree bite valve
  • Tube port, compatible for HHF™ kit
  • Map and key pocket
  • Hydration tube clip



  • Volume: 3 L
  • Hydration capacity: 3,0L (100oz)
  • Weight: 490g *Inc. bladder
  • Dimensions: L 41cm x W 32 cm x H 8cm
  • Sizing: M-XL (one size) multi size adjustment



We recommend wiping your pack with a damp cloth to remove dirt. If the pack is extremely dirty and needs a deeper cleaning, soak it in cool or warm water with a very mild soap. Rinse the pack thoroughly with cool water. If soap residue remains in the fabric, it may create suds if exposed to water or sweat.

*DO NOT wash your pack in a washing machine. Machine washing may damage the pack or affect the integrity of the fabric and fasteners, and will void the USWE® Guarantee.