Material: Polyester (Polyester)Size S M L XL 2XL 3XL 4XL 5XL 6XLBust 96 100 104 108 112 116 120 124 128Hem 74 78 82 86 90 94 98 102 106Shoulder width 37 38.5 40 41.5 43 44.5 46 47.5 49Sleeve Cage 22.5 23.2 23.9 24.6 25.3 26 26.7 27.4 28.1Back centre length 60 62 64 66 68 70 72 74 76Zip length 60 62 63.7 65.7 67.4 69.4 71 73 74.7Power connector: USBPower supply: 5V/2A mobile power (not included)Function: warm, waterproof, coldTemperature offset: (manual adjustment)Temperature 45 degrees (red light)Comfort: 35 degrees (white light)Energy saving 25 degrees (blue light)Function(1). Multiple Heating Zones and 3 Temperature Controls: Carbon fibre heating element generates heat in the lumbar, abdominal and upper back areas; 3 heat levels can be set at the touch of a button (back and abdomen can be controlled separately).(2). USB CHARGING: Easy to charge. Must always be connected to a 5V2A mobile power supply (mobile power supply is not included with this product). The mobile power supply must be removed when cleaning.(3). Safety and health: only 5V far infrared heating, far below 36V human safety voltage. Stable heat generation, human body safe voltage. Suitable for better warming the abdomen and waist.(4). Large heating area: The electric heating waistcoat is built-in multiple heaters with the function of blood heating, which not only warms the stomach, back, waist and abdomen, but also promotes blood circulation.(5). WIDE APPLICATION: This heating waistcoat is suitable for outdoor skiing, winter fishing, mountain biking, cycling, camping, snow hiking, hunting, outdoor existence, winter street, daily office, etc.(6). SAFE AND LIGHTWEIGHT: Improved heating system provides comfortable warmth. Large carbon fibre electric heating wire is safely insulated. Comfortable and skin-friendly, smooth touch for better warmth. It is easy to spend the whole winter in cold environment without wearing thick clothes.Applications:(1). Unplug the USB plug.(2). Connect the mobile power(3). Press and hold the chest temperature control output switch for 3 seconds.(4). Press and hold the chest temperature control switch for 3 seconds to start preheating, then adjust to medium heat when you need to always connect the mobile power.(5). Manually adjust to three levels, warmth 45 degrees Celsius, comfort drive 35 degrees Celsius and energy saving drive 25 degrees Celsius.(6). Press and hold the chest temperature control switch for 3 seconds to switch off the light and stop heating. How to wash the heating waistcoat: Machine washable and hand washable. Do not twist or tangle. Unplug the unit before washing and ensure that it is dry before heating.Warm tips1. If it is not used for a long time, please do not connect the spare charger.2. Do not use high temperature water or strong acidic detergent.3. Prohibit the use of electricity on wet clothes, if the clothes are wet, please switch off the power and stop using.4. Use time depends on the capacity of the detachable charger.Washing instructions1. Remove the detachable charger.2. Use neutral detergent and hand wash.3. Do not rub or pat it.4. Dry naturally and ready to use.