Features Updated CrossFlo Suspension Ventilated EVA foam on hip belt and shoulder harnesses Top-loading main compartment with quick-draw top closure and full-body front U-zipper access Floating, removable top pocket with zippered pocket and key clip Under-lid zippered stash pocket Description Product Description Slightly smaller than the Z65, the 55-liter Z55 is ideal for long weekends in the backcountry and gear-heavy alpine overnights. Superlight thru-hikers can stuff this versatile pack for longer trips, while dropping a few crucial ounces from their backs and keeping a feature set not found on other lightweight hiking packs.