Made of polyester. Features: P.P. webbing, molle compatible, hydration bladder compatible, waterproof bottom, heavy duty zippers, polyurethane coated lining and pockets for water repellency, one large main compartment with interior mesh zippered pocket, front zippered compartment with exterior zippered pouch, adjustable/removable waist belt, adjustable padded shoulder straps with d-rings, padded back with breathable mesh backing, top carry handle, top and side adjustable web straps with quick release buckles. self repairing zippers, p/u coated lining and pockets, 1 large main compartment with zippered pouch, rubberized water bottom, padded back with breathable mesh backing, adjustable and removable waist belt, adjustable padded shoulder straps and carry handle. Constructed of rugged, tactical polyester. Accepts modular or A.L.I.C.E. attachments. Hydration bladder compatible. Size: 19" x 15" x 8".