The 12V Heated Glove Liners allow each rider to enjoy their own motorcycle glove without the sacrifice of heat performance. The heated glove liner's thin material contours to the hand, which allows the heated glove liner to comfortably fit under the rider's outer motorcycle glove. If two glove layers is too much, feel free to wear the heated glove liners on their own and still enjoy top-quality warmth. The thermal protection circuit located in the heated glove liner and the fuse kit provides dual protection from overheating. Riders are safe to use them in rain or shine.