The Blue Ice Chiru 25L Backpack is made for committed mountaineers and ice climbers, with a set of features built for high-alpine ascents. The rugged 210D ripstop nylon is treated with a DWR coating that repels moisture, with an external rope strap and ice tool sleeve that keeps our axes secure as we make our approach. The large 25-liter main compartment stores extra layers, while two smaller accessory pockets keep our smaller essentials organized.