600 Denier polyester. PVC coated lining. Large main compartment w/ flap. Removable padded sleeve for laptop. Zippered file and organizer compartment w/ ID holder. M.O.L.L.E. loops on back. 3 detachable M.O.L.L.E. pouches on front. Adjustable padded shoulder strap. Carry handle. Size 17.5" x 12.5" x 6". Color options-Coyote Brown, Black, ACU Digital Camo, Foliage Green.