Material:High quality of Carbon fiber. Package include:4 pieces. Please confirm your car shape the same as picture before ordering. 1 The items back with double sided tape. 2 Clean the suface where you want to stick. Keep dry and clean. 3 Please do press hard especially on the edges at least 2 mins after installing. 4 Better to use a lighter or a hair dryer to provide a slight heat for the tape after remove the cover, it will improve its stickness. 5 Please don’t touch water and Keep dry after been install at least 72 hours. Or it will easy to fall off.