Specifications Product NameHeated VestModelI58621ColorBlack BlueMaterialNylon Cotton SizeM L XL 2XL 3XL 4XLPower Supply InterfaceUSBTemperature Shift Manual adjustment High Temperature 65℃ Red Light Middle Temperature 55℃ White Light Low Temperature 45℃ Blue Light SizeLength cm Bust cm Shoulder width cm Collar height cm M6310140 57 5L6510541 57 5XL6710942 77 52XL6911343 97 53XL7111745 17 54XL7312146 37 5Features 11 zone heating independent control by double switch Far infrared heating technology with hot compress physiotherapy function Four wire design high power fast heating effect and safe and not easy to break Down stuffed cotton material warm comfortable and breathable 3 levels adjustable temperature you can adjust temperature from 45° to 65° General USB interface power supply longer service life anti water splashing and washable With mobile power bank storge pocket design easy to take when in travel 3s fast heat dispel cold and keep you warm Package Includes 1 x Heated Vest Mobile Power Not Included Note The size might be slightly different due to manual measurement Your kindly understanding would be appreciated The color of the item may vary slightly due to photography and different PC monitor