Tech21 Impact Tactical Case for Nokia Lumia 630/635 - Retail Packaging (Black) Scientifically Proven D3O Impact Material Which Absorbs And Dissipates Impact A Ruggedised Tpu Formula Renowned For Its Excellent Flexibility And Abrasive Resistance A Slim-Fitting Design With Access To All Functions Of The Device Outstanding Impact Protection For The Back And Sides Of Your Valuable Device In A Minimalistic, Stylish Design