Heavy-duty 600D PVC nylon; Heavy-duty 600D PVC nylon; Overall Size: 4032 cubic inchesside, (5"x 2.5"x 8", 100 cubic inches) * Main compartment: 17"H x 10"W x 4"D; Top front: 5"H x 7"W x 3"D; Lower front: 10"H x 8"W x 2"D * Secondary main compartment:16"H x 10"W x 2.5"D; Overall Size:4032 cubic inches; Hydration compatible * Integrated nylon organizer; Side- and top-mounted compression straps; MOLLE and PALs compatible * Adjustable hip strap; Reinforced drag handle; Heavy duty rust resistant nylon zippers