Keep a clear head with the Bounce iPhone 4 case with Pong technology. It is the only technology proven by FCC-certified laboratories to reduce cell phone radiation while maintaining full signal strength. A paper-thin strip deflects radiation away from your head, leaving you with a slender, stylish case with more protection than ever. The Bounce redirects your cell phones electromagnetic energy away from your head. Once redirected, the radiation quickly dissipates and poses no threat to you or those around you. It is proven to reduce hotspot (EFI) radiation by 85%, and overall (SAR) radiation by 60%. The case itself features a silicone design with easy-to-grip ridges. It is a protective case for both your phone and you.