Gerbing 12V EX Heated Jacket Part of Gerbing's most technologically advanced riding system, the EX jacket has removable coreheat12 Thermovelocity Protection, telescoping Lycra cuffs, a full complement of certified back, shoulder, and elbow impact protectors, ample reflection panels and full ventilation to keep you moving at speed in any condition. The shell's waterproof G-liner construction is a non-removable, floating Aquatex membrane that lives between the outer shell and inner mesh lining. The Coreheat12 Thermovelocity System is powered by a simple connection to your motorcycle's DC power system. A combination of Gerbing's patented microwire heating technologies in conjunction with the 12 volt electrical system on your motorcycle keeps you warm at speed. Features Thermal resistors installed on each individual heading pad act as a solenoid to eliminate hot spots and overheating Heating pads on the chest, back, collar, and sleeves of the removable liner Shell of jacket is waterproof and seam-sealed with a DWR finish G-liner construction Comfort cuffs with thumb holes 500 Denier Cordura outer shell Intake vents (indirect) under each arm and exhaust vents at the rear Knox elbow, shoulder and CE Level 1 back protector included YKK jacket / pants connection zipper Includes battery harness Max Heat 135F 77 Watts Power 12V DC 6.4 Amp 1 year warranty Note RevZilla finds the Gerbing EX apparel to fit a bit small and would advise ordering one size larger than you would typically wear.