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, Alpinestars Heat Tech System features superior Graphene heating panels which ensure greater efficiency and heat distribution, as well as being more breathable, flexible and robust over time, The four heating panels are strategically positioned on the chest, lower back and back of the neck for optimum heating performance, The vest is constructed from a blend of soft materials (polyester/stretch) optimized for enhanced rider comfort, The front closure features an asymmetric angled zipper for reduced material bulk when worn under other layers, The vest is equipped with a pocket on the bottom right side to safely and securely store the battery, There is a visible button on the bottom right side that activates the heating system, Internal soft brushed mesh panels cover the Graphene heating plackets for enhanced rider comfort, Reflective prints on back and front, The rear is elongated for greater coverage and protection from the elements in the riding positions