Placed directly into the met-in space reduces scratches on helmets, luggage and met-in bottom. Specially designed for PCX to fit the met-in The thickness of the product is about 0.04 inch (1 mm), so it does not compress the space of the met-in and will not affect the storage of the helmet. Compatible models: PCX (2BJ-JK05), PCX160 (2BK-KF47), ADV160 (8BK-KF54) specifications, etc., please check the manufacturers website for product information. (http://alcanhands.co.jp/) *If you are concerned about it slipping or sliding around inside the met-in, please use double-sided tape to secure it accordingly. It does not protect the sides of the met-in.