Gerbing is the original and most trusted brand of motorcycle heated clothing in the world. This Gerbing Heated Jacket Liner is no doubt the best heated jacket to keep you warm while riding your motorcycle or ATV. This 12V heated jacket liner is the perfect addition for any rider wanting complete comfort, regardless of the temperature. Built on a durable, wind-resistant nylon chassis, this liner comes with 7 Microwire-powered heat zones; collar (1), chest (2), sleeves (2), and back (2). It is designed to be worn as a mid-layer, under your protective jacket. The Microwire™ heat zones come to full temperature in seconds. The liner also serves as "home base" for Gerbing heated gloves, pants and sock connections. Get the most out of the liner by pairing with one of our dual-zone controllers, like the Dual Controller (Wireless Ready), or the Dual Bluetooth controller that features a "set it and forget it" temperature control technology (measures the internal temperatures, and ramps the heat up or down based on your selected temperature setting) Features & Benefits: Jacket has seven Microwire heating zones: collar, chest (2), sleeves (2) and back (2). Pre-wired glove connections at end of sleeves Low profile elastic cuff for improved fit under jacket Mini Ripstop nylon shell ThermoGauge Bluetooth Compatible Drop tail back for improved coverage while riding Gerbing 12V Jacket Liner Technical Specs: Power 12V DC 6.4 Amp Max Heat: 135° @ 77W Power 12V DC 6.4 Amp