adidas Formotion Small Duffel,Black,one size Polyester Material: Polyester dobby FreshPAK exclusive anti-microbial coated lining inhibits the growth of odor-causing bacteria, keeping the contents fresh LoadSpring shoulder strap comfort technology provides a buffer between shoulders and the weight of the pack; power-mesh fabric delivers shock absorbency, and webbing supplies durability and elasticity Main compartment with zippered mesh valuables pocket and key fob End cap with FreshPAK technology