waterproof 1680D polyester,optional use 2 powerful magnet system,PVC bag for map,detachable base&can be used as backpack Motorcycle Tank Bag MB09 :Multiple purpose (the wild, long-distance riding and daily use)A full helmet can be placed inside;Maps and identifications can be installed; Good for riding at night. MATERIAL: 600D, Anti-slip leather, Reflective materials. Motorcycle Tank Bag MB09