420D polyester construction Hypalon abrasion resistant re-enforcement. YKK oversize zips. 2 external and 2 internal compression straps. Padded shoulder strap included. Hypalon carry handle. 1 x zip pocket 2 x Coated-mesh zipped pocket VOLUME: 30-40 Litres capacity; DIMENSIONS 30L: 370(h) x 420(w) x 180(d) mm 14.6(h) x 16.5(w) x 7.1(d) ins 35L: 370(h) x 420(w) x 220(d) mm 14.6(h) x 16.5(w) x 8.7(d) ins. 40L: 370(h) x 420(w) x 260(d) mm 14.6(h) x 16.5(w) x 10.2(d) ins. WEIGHT: 1,350 Grams