Accepts modular or A.L.I.C.E. attachments. Hydration bladder compatible. Key features include: Front zippered compartment with zippered pouch, 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, self repairing zippers,and carry handle. Size: 19" x 15" x 8"