HW heavy weight 600 denier polyester - p.p. Webbing. MOLLE compatible. Heavy duty zippers. Polyurethane coated lining and pockets for water repellency. One large main compartment with zippered pouch and mesh pocket. Three additional pockets and storage compartments. Adjustable padded shoulder straps. Padded back with breathable mesh backing. Top carry handle. Great for school, camping, hunting, back packing, etc. GI Government Issued style. Desert Digital medium transport pack. Medium tactical transport pack. Dimensions: One large main compartment with zippered pouch and mesh pocket - 17" X 8.25" X 4.25". Three additional pockets and storage compartments - 16" X 7" X 3.25", 10" X 6.5" X 2.25", 3.5" X 6.5" X 2.25".