Professional heated vests add more heating zones, compared to other old heated clothes they have only 5 heating zones. Our new vest includes 5 heating zones, IS heated with high quality carbon fibers, uses fast heating technology, is lightweight and flexible and safe to use. Includes 5 heating zones and 3 heating levels: 5 carbon fiber heating elements generate heat in the main areas of the body (chest, waist, back and neck). Adjustable 3 degrees of heating (high, medium, low) with a simple push of a button. Clothing length: ordinary (50cm Collar type: stand collar Fabric name: chiffon Main fabric composition: linen Input: 5V Color:Black,Blue Applicable ambient temperature: -30 to 14 C Heating place: neck / back Temperature: 45C (warm equipment), 35C (comfortable equipment), 25C (energy saving equipment) Size:M Size:L Size: XL Size: XXL Size:XXXL Size:XXXXL Size: 5XLL