PureGear Groovy Gamer Case for Samsung Galaxy S4 - Retail Packaging - Black synthetic Shock Absorbing Corner Impact Protection Controls Shock By Isolating Vibration. Durable Layered Materials Combine Strength, Toughness And Flex. Ergonomic Grip Designed For A Secure Yet Comfortable Grip Of Your Phone Shock Absorbing Corner Impact Protection controls shock by isolating vibration. Durable Layered Materials combine strength, toughness and flex. Ergonomic Grip designed for a secure yet comfortable grip of your phone. Shock Absorbing Corner Impact Protection Controls Shock By Isolating Vibration. ^Durable Layered Materials Combine Strength, Toughness And Flex. ^Ergonomic Grip Designed For A Secure Yet Comfortable Grip Of Your Phone.