EX PRO heated motorcycle jacket includes a built-in removable heated Gerbing Jacket liner that you can wear with our without the protective outer shell. Durable, windproof and waterproof 3 season riding jacket; use with the removable 12V heated liner (included) and it becomes a true 4 season riding jacket. Microwire™ technology utilizes patented micro-sized stainless steel fibers intertwined and encased in a proprietary waterproof coating. Gerbing 12V garments plug right into your electrical system on your motorcycle, snowmobile, ATV, boat or airplane for an unlimited source of power and keeps you warm at any temperature, any speed. There are connections in an internal stow pocket that are used to connect 12V heated gloves, pants, and sock/insole products. Removable insulated liner with seven Microwire™ heating zones: collar, chest (2), sleeves (2) and back (2). Pre-wired glove connections at end of sleeves. Genuine CORDURA 500 denier outer shell with rip-stop material in all impact areas. AQUATEX breathable waterproof G-Liner membrane in the outer shell with a Durable Water Repellent (DWR) finish. YKK zippers for jacket / pants connection. Exhaust vents at the rear provide indirect venting. Telescoping Lycra comfort cuffs with thumb holes. Reflective panels at chest, collar, shoulders, cuffs, and back. All Gerbing installations require a Battery Harness and Temperature Controller for operation (sold separately).. We recommend the use of a temperature controller with this product. Failure to do so may cause discomfort & burns..