Material: 1000D twist weave polyester. Water and abrasion resistant fabric. HD polyester lining. High density seatbelt webbing. Grab handle. Innovative strap system converts from backpack to shoulder bag. Padded adjustable shoulder straps. Adjustable chest strap with clasp fastening. Breathable padded mesh back panel. Main zip compartment. External secure padded laptop compartment, compatible up to 40cm. Internal elastic bottle holder. Side zip pocket for bottle/umbrella. Easy access side pockets. Tear out label. Capacity: 28 litres. Size: 55 x 31 x 25cm. Print area: 20 x 20cm.