Features： 1、Suitable for all kinds of motorcycles. 2、Easy to install/disassemble, and quickly fix the helmets. 3、Do not increase the burden of riding. 4、Combined with the bag with D-buckle, it can playing the role of carrying additional helmets or other items. Specification： It is convenient to store helmets, does not take up space, is light in weight, and does not drop. Features: Suitable for all kinds of motorcycles. Easy to install/disassemble, and quickly fix the helmets. Do not increase the burden of riding. Combined with the bag with D-buckle, it can playing the role of carrying additional helmets or other items. Specifications: Type: MTR003A, MTR003B (optional) Material: polyester Color: black Open size: 310 * 300mm / 12.2 * 11.8in Package size: 160 * 120 * 30mm / 6.3 * 4.7 * 1.2in Package weight: 130g / 4.6ounce Packing List: 1 * Net Bag Package List： 1 * Net Bag