Design and Details Alpine backsystem Lightweight Waterproof Precision-adjustable sternum strap with whistle buckle Zippered front pocket with waterproof lap and key clip Stowable hip fins Roll-top capacity extension Ice axe attachment SOS label Docking loops for helmet holder Rope strap Gear loops Attachment points for side compression straps Removable back plate for reducing weight Stabilizer straps Side compression straps for attaching skis and other gear 220D PA Plain TPU