Model:B6227DF2695GH1778Size:M=Bust 98cm60cmL=Bust 102cm62cmXL=Bust 106cm64cm2XL=Bust 110cm66cm3XL=Bust 114cm68cm4XL=Bust 118cm70cm5XL=Bust 122cm72cm9-zone heating powered by 5V USB interface, compatible with most power banks, heating within 3 seconds. Three heat settings (high, medium and low) can be adjusted at the touch of a button. Helps promote blood circulation and relieve muscle soreness in winter. Great for people who suffer from frequent bone pain in cold or rainy days. It's comfortable and smooth to the touch and keeps you warm all winter long without the need for a thick coat.Note: The product does not include a power supply, you need to provide your own