Stuff the Mountainsmith Scream 25 Pack into its own pocket and bring it along on backpacking trips for summit assaults. A favorite for peak bagging and travel.Backcountry Pillow: Pack stuffs into its own pocket in top lid, doubling as a headrest. Breathable shoulder straps with gel pocket. Airmesh backpanel. Fixed top lid with zipper stash pocket. Single trekking pole/tool carry. Deep side panel mesh pockets fit most 32oz bottles. Side compression straps. Internal hydration sleeve fits up to 3L. Elastic sternum strap and bite valve catch with safety whistle. Reinforced haul handle. Waistbelt: 28-48 in. Capacity: Up to 25 lbs.