The bumpers hug the outside edge of the iPhone 4 to protect the phone from bumps and scrapes, with its rubber combination it will add necessary protection whilst also looking very cool. Features Made of durable rubber and molded plastic Fits snugly around the edges of your iPhone 4 Fun and unique way to personalize your iPhone 4. This will also solve your no signal/antenna problems - White Bumper Case Skin Cover for Apple iPhone 4 4G Keep Talking Accessories