Snow is getting sparser every season, so we appreciate backcountry gear with an environmentally-friendly design. Arva's Reactor 18 Calgary Airbag Backpack combines modern avalanche technologies with a construction consisting mainly of recycled materials to help us tour the backcountry safely and in good conscience. Its Reactor airbag is one of the lightest in its class, and the 3-in-1 3D Fit adjustment system delivers the perfect fit no matter how many layers we have on.