... 100% silicone,pass SGS (2)Mobile phone keypad can produce excellent tactile responsiveness. 1)Mobile phone keypad Material :100% silicone rubber ... even under extremely high or low temperature. 4)Applications: Mobile Phones, Calculators, Hand-held Games, PC, Notebook Computers ... switches, Remote Controls, Micro Equipment, typewriters, cordless Phone 5) All shapes and colors available for buyers design.