600 denier polyester material. Top quality craftsmanship, detailed construction. 3 large vented outside pockets. The right and left are 4" wide. The center is 8" wide. Extra wide heavy padded kidney pad and strap. Includes a heavy duty anodized aluminum frame. Heavy padded shoulder straps. Waterproof lining. Accessory flaps. A favorite of military personnel, campers, bicyclist, hikers, fisherman, outdoors men, and much much more. GI Government Issued style. Black - Large GI type ALICE pack w/frame, 22" x 20" x 19". Dimensions: 22" x 20" x 19" (inches).