Description: Features: 100% brand new and high quality Made of high quality polyester, lightweight, soft, flexible and comfortable to wear. Suitable for both men and women. Built-in 5 pieces heat therapy pad quickly warm up, helps promote blood circulation and relieves muscles, shoulder and back discomfort. 5 heating zones and 3 temperature adjustments: 5 carbon fiber heating elements generate heat across the waist, belly and upper back. Press and hold the button for 3 seconds to start working. It has a standard USB port to use the battery as a charger(Power Bank is NOT Included) Great for outdoor winter sports, skiing, fishing, bicycle, camping, snow hiking, hunting, outdoor attendance, winter street, etc. Washing instructions: 1.Take out removable charger, neutral detergent is available, hand wash. 2. Do not force knead or beat, after nature air drying can be use. Specification: Color: Black Material: Polyester Temperature: 55-45-35 degrees(high/medium/low) Power supply: USB Charging Size: S/M/L/XL/2XL/3XL/4XL/5XL/6XL(Chinese Size,follow the size chart to select please) Size:SLength:58cm(22.83inch)Bust:90cm(35.43inch)Shoulder:39cm(15.35inch) Size:MLength:60cm(23.62inch)Bust:94cm(37.01inch)Shoulder:39cm(15.35inch) Size:LLength:62cm(24.41inch)Bust:98cm(38.58inch)Shoulder:40cm(15.74inch) Size:XLLength:64cm(25.19inch)Bust:102cm(40.15inch)Shoulder:41cm(16.14inch) Size:2XLLength:66cm(25.98inch)Bust:106cm(41.73inch)Shoulder:42.5cm(16.73inch) Size:3XLLength:68cm(26.77inch)Bust:110cm(43.31inch)Shoulder:43.5cm(17.12inch) Size:4XLLength:70cm(27.55inch)Bust:114cm(44.88inch)Shoulder:44.5cm(17.51inch) Size:5XLLength:72cm(28.34inch)Bust:118cm(46.45inch)Shoulder:45.5cm(17.91inch) Size:6XLLength:74cm(29.13inch)Bust:122cm(48.03inch)Shoulder:46.5cm(18.31inch) Quantity: 1 pc Warm prompt: 1.Asian people size is 1 or 2 sizes smaller than European and American. 2.Please note that low temperature washed,do not bleach and place under the blazing sun for quite a long time. 3.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 4.Because of different monitors and lamplight,the picture may not reflect the actual color of the item,really thank you for your kind understanding! Package includes: 1 x Vest(without retail package)