12V clothing heats up by plugging directly into your motorcycle or any vehicle's 12V power source. No separate battery needed - as long as the vehicle is on, you are warm. Clothing requires a controller for operation and can be worn independently or connect a full outfit together. These garments are perfect for motorcycles, snowmobiles, buses, or anyone with a 12V plug-in. For more info on how 12V Heated Clothing works, check out the FAQs Page.