Fusion Flex Pro suspension - Fusion Flex Pro Suspension with Dual Aluminum Stays for hauling massive loads into the backcountry , Strippable Features - Removable features like aluminum stays, top pocket, bivy pad, and hipbelt to transform to a lighter pack , Aluminum Hardware - Durable Aluminum hardware for cold weather durability and functionality with gloves , DURABLE CONSTRUCTION & HYDRATION COMPATIBLE: Puncture-resistant dual-layer internally laminated front panel. Internal hydration reservoir sleeve with tube port. , IDEAL USES: Mountaineering, Alpine Climbing, Ice Climbing, Ski MountaineeringTouring - WEIGHT: 6.7 lbs. - DIMENSIONS: 36.5" x 13.25" x 11.75"