Fabric name: chemical fiber blend pattern: plain Color: Black/Grey Filling: polyester fiber Collar type: stand collar style: old Function: wear-resistant Style: six-zone fever/nine-zone fever Heating wire material: carbon fiber Adapted to sports: running/snow sports suitable season: winter Applicable gender: general Applicable age group: adults Size:cm M: Length: 63 Bust: 106 Hem: 98 Shoulder width: 40 Recommended weight (jin): 95-115 Recommended height (cm): 155-165 L: Length: 65 Bust: 110 Hem: 102 Shoulder width: 41.5 Recommended weight (jin): 115-130 Recommended height (cm): 160-170 XL: Length: 67 Bust: 114 Hem: 106 Shoulder width: 43 Recommended weight (jin): 130-145 Recommended height (cm): 165-175 2XL: Length: 69 Bust: 118 Hem: 110 Shoulder width: 44.5 Recommended weight (jin): 145-160 Recommended height (cm): 170-180 3XL: Length: 71 Bust: 122 Hem: 114 Shoulder width: 46 Recommended weight (jin): 160-175 Recommended height (cm): 170-185 4XL: Length: 72.5 Bust: 128 Hem: 120 Shoulder width: 48 Recommended weight (jin): 180-200 Recommended height (cm): 170-190 5XL: Length: 74 Bust: 134 Hem: 126 Shoulder width: 50 Recommended weight (jin): 200-220 Recommended height (cm): 175-190 6XL: Length: 75 Bust: 140 Hem: 132 Shoulder width: 52 Recommended weight (jin): 220-240 Recommended height (cm): 180-195 7XL: Length: 76 Bust: 146 Hem: 138 Shoulder width: 54 Recommended weight (jin): 240-260 Recommended height (cm): 180-200 Note: There may be a 1-2cm error in the above size, the size is for reference only, please refer to the actual product. New four-layer cotton lock technology: one layer of nylon comfort fabric, two layers of release cotton bile cloth, and one layer of warm and comfortable lining Rapid fever: 1 minute rapid heat, cold and warm. Thermally conductive lining: thick lining, strong ventilation and warmth retention, comfortable and delicate, good color, soft and smooth hand feeling, warm and comfortable to wear. Three temperature controls: Warm 45, Comfort 35, Energy saving 25 Charging: Powered by mobile power bank, long battery life. Cleaning: Easy to wash, the power interface is insulated and waterproof. Cleaning instructions: machine wash, hand wash, do not wring out by hand. Carbon fiber heating wire features: fast heating speed, fast heat conduction, high temperature resistance, corrosion resistance. Heating characteristics: It is designed for the cold parts of the neck/abdomen/back, covering the cold parts, providing warmth and care. Heated vest - warm and comfortable The vest has up to nine heating zones that simultaneously warm your back, neck and hands, providing warmth for extended periods of time. The unmistakable advantage of the vest is that it has 3 heating modes that can be adjusted using the buttons located on its upper part.