Razer's phone case is specifically designed to prevent smartphones from overheating during heavy activities, such as gaming.
Razer's Arctech uses Thermaphane technology to move the heat away from the mobile phone while increasing the airflow from the exterior of the case. The overheat preventing case is made from microfibers to protect phones from scratches. The Thermaphane technology is placed between the microfiber lining and the perforated outer casing to get the heat out.
Arctech has two different versions of the cooling case, Slim and Pro. The Pro version has protection from drops up to a height of ten feet. The cooling case is available only for Apple1s new iPhones. The Slim is priced at $30, while the Pro version is available for $40. (via)