Alpine backpack avalanche backpack suitable for unisex colour black style sporty capacity 30 litres weight 256 kg height 50 cm width 29 cm depth 23 cm features avalanche airbag system key holder hydration compatible chest strap hip strap water bottle pocket padded back internal pockets snow tool pocket glasses pocket inside zip compartment outside pockets front pocket additional fastenings ice axe holder ski attachment snowboard holder helmet hold