DESIGN - The mirror is convex, no metal in the whole body, which can be waterproof and rustproof. Double sided adhesive on the back to attach to the mirror of the car mirror ENHANCED SAFETY - This mirror is a blind spot mirror that allows you to see into the blind spot behind you when you stop and turn 360 DEGREE ADJUSTMENT - Wide angle mirrors come with an adjustable swivel mounting housings that rotates and swings 360 degrees to maximize your field of view HD REAL GLASS LENS - curved design with ABS housing , equipped with 3M adhesive for pressure-sensitive tape installation. IP67 waterproof, rust resistant and the glass will not haze, suitable for interior or exterior use. EASY TO INSTALL - Please clean your original car side mirror, then stick the blind spot mirrors on side rear view mirrors. Press down HARD when the mirror is stick to the side mirror, it is more firmly stick and will not fall off.