... its material is unique, is the crystallization of the high-tech, its high efficiency, novel, practical features and usage and fully shows her efficiency ... test, in 80 degrees Celsius and 20 degrees below zero, the use of the same nature.Durability: durable, can use repeatedly 2 years ... to adjust.Note: stick on the back on things must be plane. Of course the two pieces of rubber cushion can be used ...