IZTOSS Mini Car Baby View Mirror 2 in 1 / Car Rear Baby Safety Convex Mirror for Car Adjustable Baby Mirror Mirror size: 88*56*22MM,Material: ABS Install on windshield /sun visor and directly through the mirror to give you the best of the baby. Designed to help you see your baby when they are in a rearward facing car seat, without having to turn your head whilst driving. Easy to fit-mirror attaches in seconds to sun visor, windscreen and rotates and pivots for a clear view. Use the Suckerbefore use sucker,you need Counter clockwise rotation after you Stick the mirror on the glass.you Need to rotate clockwise until you heard a "ka" sound,then it will be ok.