This design features a slightly thicker elastic TPU bumper which helps cushion your phone against impact damage and a flexible TPU inner core protects your device against knocks and scratches. The second outer layer is constructed from a scratch-resistant coated strong polycarbonate (PC) material that adds further protection and strength to your phone while retaining a slim and luxurious feel. A line of tiny hooks around the inside edge of the TPU layer helps hold the PC layer tight for further reinforcing the case. Last but not least, a raised bezel helps keep your screen protected, too.