The bicycle bar end mirrors adopt blast-resistant & shockproof convex mirror with 3.07''diameter, offering you a wider field of view and a significantly more stable image than in flat mirrors, regardless of on flat or rugged mountain road. It is also easy for you to remove the mirror from the handlebar when you don't need them. With a clear view mirror you can see what's behind you. Easily look around & keep safe driving. In order to protect the rearview mirror lens, so we sticks the protective film, please remove it before using. Thank you!