Gregory Mountain Products Z 55 Backpack

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.
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