NewerTech NuGuard KX X-treme Protection Case for iPhone 4/4s, Darkness Features a unique & revolutionary kinetic energy X-orbing gel that aborbs and deflects damaging impacts away from the phone. Independently tested and certified at Quanta Laboratories to withstand the U.S. Military shock test method MIL-STD-810G making the KX tough enough for military use Exceptional protection without bulk  slightly over 0.5" thick including the phone Edge Guard over-molding provides enhanced screen edge protection without interfering with touchscreen use Full replacement lifetime warranty plus no risk, no hassle 30 day money back guarantee