Hyperion Sprint HTC Evo 4G Extended Battery HoneyComb TPU Case Purple (Hyperion Retail Packaging) Hyperion cases are designed to provide optimum performance with their ultra thin TPU Honeycomb matte finish. Matte Finish Prevents Fingerprints, and smudging. Intended for use with aftermarket 3500mAh Extended Battery and Back covers (Not Compatible with Verizon OEM, or Seidio branded batteries and back covers). Precise Cutouts Give Full Access To All Ports. Honeycomb Design by Hyperion. Cases come Brand New in Retail Packaging.