Straight backs are happy backs. Kanken has many simple, clear functions. It is an excellent choice for school, outings or biking to work. Kanken is made out of durable, lightweight Vinylon F. Details: 100% vinylal outer material, 100% polypropylene webbing, large main compartment with a large opening makes it easy to put in or take out items, two side pockets and a zippered pocket in the front, handle at the top, narrow, supple shoulder straps, sitting pad in the pocket in the back and logo that doubles as a reflector, PFC-free impregnation. Clean with a soft brush and lukewarm water. Height: 38 cm. Width: 27 cm. Depth: 13 cm. Weight: 300 g. Volume: 16 L. Material: Vinylon, Polypropylene.