Mens Small 12 Inch Multi Camo Tactical Molle Hydration Ready Sling Shoulder Strap Backpack Material: 600 Denier Polyester for durable use; Rear dual zippered hydration pocket (11L x 7.5W) for 1 Liter water bladder with pass-through slot at top for water tube Excellent storage: 1 front top zippered, 1 front bottom with audio port for ear buds and headphones, 1 front bottom dual zippered (with organizer and elastic grab strapping, tether strap swivel hook for keys), dual zippered main compartment (open pocket with velcro security strap, zippered flap pocket, open pocket padded adjustable shoulder strap with D-Rings, large buckle snap and adjustable security strap for extra stability Molle Straps, D rings, velcro attachment points: allows excellent attachment of pouches, accessories, caribiners, etc... when needed Mesh bottle holder with elastic to secure it; padded rear panel for extra comfort; padded grab handle for hanging or carrying Overall Dimensions: 12"L x 8"W x 8"D; Volume: 650 cu. in.