KaysCase CityGeo 0.4mm Ultra Thin Snap-on Cover Skin Case for iPhone 4/4S including 2 Screen Protectors (Blue) High quality stylish designer case for Apple iPhone 4 and 4S. Snap on case protects back and sides from scratches, dirt and bumps. Anti-slip design for the side for easy grip and comfortable feeling. Precise cut-outs allow accesses to all controls and buttons. Ultra thin. 0.4mm adding almost nothing to your iPhone.