Built for the backcountry skier or snowboarder, the Arc'teryx Silo 30 Backpack is equipped to carry all the Must haves for all-day out-of-bounds powder searches. An internal shovel and probe sleeve system provides quick and easy access in the event of an emergency, while the Wrap System board carrier offers solid holding power for extended step-kicking sessions. No matter what board you choose they're not the easiest thing to carry; but the combination of thermoformed shoulder straps, hip and back padding, plus a HDPE frame sheet and thoracic v-stays provide nice Strength that makes long climbs nice. For climbs that are rewarded with an untracked run at the end, the Arc'teryx Silo 30 Backpack includes two ice axe loops and Velcro axe keepers.