Hybrid TPU Skin Cover for Samsung Focus S i937, Black/Smoke Protects the side edges and back of your phone. Hybrid cover consists of a flexible, semi-hard, semi-soft Thermoplastic Polyurethan (TPU) edge and a smooth hard back. Stylish glossy TPU edge provides shock-absorbing protection. Lightweight TPU is resistant to taring, stretching and deforming. Impact-resistant smooth hard back makes this skin cover slide easily into your pocket or purse.