Givi V46NF 46 Liter Monokey Motorcycle Top Case With Integrated Brake/Stop Light Matte Black Top Case with Silver Trim, Red Lenses and Matte Black Top Panel 46 Liter capacity and can hold two full face helmets. The dimensions of this case are 21.8"L x 17.3"W x 12.2"H Requires Bike Specific or Universal Monokey Mounting Plate E251 to install (sold separately)