SplashETech Metal Extreme Shockproof Military Heavy Duty Tempered Glass Cover Case Skin for Apple iPhone 4 4s(Black/Black/Red) Three layers of defense include two-piece inner polycarbonate layers and an outer TPU layer Specifically design Protects the core openings of the phone, including volume controls, power button, and headphone jack Protecting your iPhone from dust and shock Specifically designed for iPhone 4/4S