Decorate your iPhone 4/4S with this cool 3D Butterfly pattern Case. The butterfly flaps its wings when you move the case. Just snap it on to you iPhone 4/4S. This snap-on case will also protect your valuable iPhone 4/4S from possible fall damage. The snap-on case is easy to put on, once you hear the snap on the case, you will know that your iPhone 4/4S will be secure.