1.2011 fashion men warm vest promotional 2.carbon fiber as heating pad 3keep body warm any time 4,lithium battery charge safe . ... name2011 fashion men warm vest promotionalvoltage7.4vpower5.5wsizefits allmaterialDylon,waterproof,carbon fiber,lithium batterytemperature40-45packingpp ... to ensure long life usage of battery. 2011 fashion men warm vest promotional