Mylar tape-style heating elements wraps around the handlebar beneath the handgrips to provicde toasty comfort at high and low temperature settings. If you ride in wet or cold conditions you know that safety and control of the motorcycle can be severly compromised by cold aching hands. Keeping thse hands warm increases endurance and riding enjoyment (many riders claim that grips heaters help to reduce forearm pump which can result in numb hands and wrists). No need to wear big bulky gloves, now you will have no problem keeping your hands warm! 12-volt system draws 36 watts of power. (Draw off lighting call power supply).