universal motorcycle helmet box ,motorcycle top case,waterproof material,top qulity and competitive priceAdvantages of motorcycle trunk:1.Easy to detach trunk can be locked, unlocked and removed from mounting plate with only one key! 2.Aerodynamically designed of heavy-duty ABS plastic with different colors 3.Big enough to hold one full-face helmet 4.Built-in backrest pad 5.Mounts to almost any luggage rack 6.Strong metal mounting plate7.The most popular touring trunk! Wide center band doubles as an easy-grip handle.