Silicone Skin BLUE Rubber Soft Cover Case for HTC EVO 4G (SPRINT) [WCS844] Soft case with silicon skin touch. Made of durable, high-grade environment-friendly silicone. Designed to offerProvides anti-slip grip with a soft, more comfortable feeling to hold all-around external surface protection to your phone. Provides anti-slip grip with a soft, more comfortable feeling to hold Smart design, gives you total access to all functionality and buttons.