The material uses tough 500-denier ripstop fabric specially ordered from CORDURA, and special processing and special welding treatment achieve a seamless finish without separation or peeling, as well as high waterproofness and durability. It comes with a detachable strap made of paracord with reflectors woven in. The closure on the flap with nylon tape tabs is magnetic, making it easy to open and close with one hand. There is also a large pocket inside. Size: W19 x H16 x D3 (Capacity) 0.8L (Weight) 200g Material: 100% Nylon / 500D CORDURA RIPSTOP (F/CE. Exclusive CORDURA Nylon) I purchased this here and it is a beautiful item, only used once.