SHIELD iShell City Traveller Ultra-Slim Polycarbonate Credit Card Case for iPhone 4 (Metal Blue) (AT&T ONLY) Slip-free, high quality Polycarbonate case designed to fit Apple iPhone 4 specifically. Quick and easy access to all iPhone features - Screen Display, Dock Connector, Headphone Port, Microphone, and Camera Lens Soft Polycarbonate Case Ergonomically Designed for Your iPhone 4 3 Interchangeable Color Logo Lenses add Customizable Style Options Ultra slim slot for metro/credit/debit/ID card