Trexcell Black Thermoplastic TPU Cover Case for Sprint Epic Touch 4G Extended Battery Designed specifically for the HTC Epic Touch 4G aftermarket extended battery and cover Access to all phone ports and buttons. Open access to speakers, microphone & camera. Manufactured from a Thermoplastic TPU. Protects your phone from falls and scratches and will NOT stretch out. Exclusive to the Trexcell 3800mAh Extended Battery for the Epic Touch 4G Will also fit most all other aftermarket extended battery brands with the exception of Seidio