Constructed of rugged, tactical polyester. Accepts modular or A.L.I.C.E. attachments. Hydration bladder compatible. Key features include: 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.