material :100%SGS apprived silicone Dust-resistant, anti-slide and prevent impact Custom size and designs are available. 1 anti-dirt ,washable , flexible , durable and tear-resistant 2 made of high quality silicone A grade material , nontoxic , approved by SGS3 unique design allows easy access to all functions without haveing to remove the skin 4 color available , white , red , light blue , pink ...