The iSkin Aura returns in a signature, modern frame for the iPhone 4 and iPhone 4S. Featuring an aircraft-grade aluminum back and an ultra-slim bracket design, it hugs and styles your new iPhone 4/4S in a snap.iSkin Aura for iPhone 4 and iPhone 4S features a discreet polycarbonate design that"s finished with a luxurious brushed aircraft-grade aluminum for a refined and amazingly thin design.Compatible with all iPhone 4 and all iPhone 4S