Alpinestars HT Heat Tech Vest, black, size M

* The automatic heating control system has a temperature sensor embedded inside the vest to continuously check the rider’s temperature in order to provide and maintain the pre-set heating temperature for supreme riding comfort. * Smartphone Alpinestars Heat Tech App (as used on Alpinestars Heat Tech gloves) for turning the vest ON/OFF and to precisely set and control the internal temperature via a Bluetooth® connection. * Dual power: the vest can be plugged to the bike battery or used with the high performance 12v Lithium Battery (included with the vest) for reliable, long-lasting power to the Alpinestars Heat Tech System. | article: Alpinestars HT Heat Tech Vest, black, size M for Men