Exterior made from windproof & breathable polyester woven fabric with WINHEAT lamination in aluminum film, to preserve heat loss. Iside with HADS DUAL POWER heating system with 4-level adjustment button. The DUAL POWER system means that you can use the jacket with different types of power: Direct connection to a 12 volt source (motorcycle battery) – Connecting to a 12 volt Li-PO battery (to put in the inner pocket) – Connecting to a at 7.4 volts Li-Po battery (to put in the inner pocket) for those activities that do not require a high heating intensity. The power is 50 Watt at 12 volt & 18 Watt at 7, 4volt. Presence of direct connections to power gloves with retention pockets & battery pocket.