Women。Material [face fabric] 210D recycled ripstop nylon, [bottom] 500D Cordura nylon plain weave, [lining] 70D ripstop nylon polyurethane Volume [small/medium] 55L (3356cu in), [medium/large] 57L (3478cu in) Support/Suspension full trampoline back panel, adjustable torso, 7000-series aluminum perimeter frame Shoulder Straps women\'s-specific fit, padded Waist Belt women\'s-specific fit, padded, 3D pivoting Hydration Compatible removable hydration sleeve (reservoir not included) Access top Pockets front shove it with zippered internal pocket, 1 zippered front, 2 side stretch water bottle, 2 zippered hip belt, removable top lid with 2 zippered compartments Gear Loops front daisy chain Ice Axe Carry attachment loop Trekking Pole Carry attachment loop Detachable Daypack removable hydration sleeve doubles as daypack Compression dual side compression straps Claimed Weight [small/medium/large] 3lb 13oz