Constructed of rugged tactical polyester. 1 large main compartment. 3 outside pockets to fit all your accessories. Adjustable padded shoulder straps. Dimensions: 20" x 19" x 11". A favorite of military personnel, campers, bicyclist, hikers, fisherman, outdoors men, and much much more. GI Government Issued style. MARPAT medium A.L.I.C.E. field pack.