Silicone Skin GREEN Sleeve Rubber Soft Cover Case for LG LS670 OPTIMUS S (SPRINT) [WCE279] Soft case with silicon skin touch. Made of durable, high-grade environment-friendly silicone. Designed to offer 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.