I am selling this because I no longer need it. ① 【Full Aluminum Construction - Durable & Waterproof Rear Box】 High-strength aluminum alloy is used from the main body to the base. This motorcycle rear box is resistant to scratches and rust, and is waterproof for all weather conditions, making it safe to use for touring and commuting. ② 【55L Large Capacity - Top Case Compatible with Full-Face Helmets】 The 55L large capacity design can easily accommodate a full-face helmet. This motorcycle top case can also store changes of clothes, shopping bags, and camping gear. ③ 【Double Lock Structure - Reliable Anti-Theft Measures】 The double lock structure with locks on the top and bottom prevents opening while riding. It is also ideal for storing valuables and helmets as a pannier case. ④ 【With Reflectors & Backrest - Improved Comfort & Safety】 Equipped with reflectors on the rear for visibility at night and in bad weather. The motorcycle box also has a cushioned backrest on the top and bottom, considering comfort during tandem riding. ⑤ 【Easy Installation - Includes Tools, Japanese Instruction Manual, and Installation Video】 Includes an aluminum base plate, fixing bolts, installation tools, a Japanese instruction manual, and an installation video for beginners. This motorcycle storage case is compatible with a wide range of vehicle models.