Speck Products SPK-A1402 SmartFlex Card for iPhone 4S - 1 Pack  - Black Fits all iPhone 4/4S Carry up to 3 cards (or folded bills) securely in the built-in side-loading slot Resilient polymer provides durable, lightweight protection and flexes on and off easily Handy thumb release gives you access to your cards whenever you need them Raised screen bezel and rubberized button covers add protection and grip