Features: Heat on demands,the thin and flexible heating component generate heat across the left and right hand pockets and midback. you can easily switchs between 3 heat settings (high, medium, low) with a press of the button. Quick and long-lasting warmth,the 5v voltage ensures the vest heats up in second. the usb a port allows you to charge your smartphone or other mobile devices on the gos. With the soft fleece lining this vest is perfect for either wearing alone or bundling up with your jackets for warmth while maintaining a bulk-free and stylish look. Machine washable,the carbon fiber heating component and vest construction are designed can machine wash. Wonderful gift,sweet warm gift for friend family or yourself. Specifications: Material:Neoprene Size:M Length:60cm(23.62inch) Shoulder:37.5cm(14.76inch) Bust:96cm(37.80inch) Waist:96cm(37.80inch) Size:L Length:62cm(24.41inch) Shoulder:39cm(15.35inch) Bust:100cm(39.37inch) Waist:100cm(39.37inch) Size:XL Length:64cm(25.20inch) Shoulder:40.5cm(15.94inch) Bust:104cm(40.94inch) Waist:104cm(40.94inch) Size:XXL Length:66cm(25.98inch) Shoulder:42cm(16.54inch) Bust:108cm(42.52inch) Waist:108cm(42.52inch) Size:XXXL Length:68cm(26.77inch) Shoulder:43.5cm(17.13inch) Bust:112cm(44.09inch) Waist:112cm(44.09inch) Size:XXXXL Length:70cm(27.56inch) Shoulder:45cm(17.72inch) Bust:116cm(45.67inch) Waist:116cm(45.67inch) Package Includes: 1 Piece Heating Vest for Men Women note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.