Description: Instructions 1. Remove the USB plug and connect to the charging treasure, press the charging treasure output switch, and press the chest temperature control switch for 2 seconds. 2. Manually adjust to the third gear Three gears: 1. Warm: 45 ; 2. Comfort: 35 ; 3. Energy saving: 25 . 3. Press and hold the chest temperature control switch for 2 seconds, and turn off the light to stop heating. Waterproof fabric, washable, can be used in the rain *Washing precautions 1. Take out the charging treasure, add a neutral detergent. Do not force it or beat it. It is easy to wear after being washed and aired. 2. Long-term not applicable, please do not access the charging treasure. 3. Do not use hot water or strong acid detergent. 4. Do not use the wet clothes to use electricity. 5. The usage time depends on the size of the charging treasure. M size recommended height: 160CM, recommended weight: 50kg, opp bag, with packaging weight 535g, with packaging size: 36*25*10CM L size recommended height: 165CM, recommended weight: 55kg, opp bag, with packaging weight 547g, with packaging size: 36*25*10CM XL size recommended height: 170CM, recommended weight: 60kg, opp bag, with packaging weight 565g, with packaging size: 36*25*10CM 2XL size recommended height: 175CM, recommended weight: 65kg, opp bag, with packaging weight 607g, with packaging size: 36*25*10CM 3XL code recommended height: 180CM, recommended weight: 70kg, opp bag, with packaging weight 643g, with packaging size: 40*25*10CM 4xl size recommended height: 185CM, recommended weight: 75kg, opp bag, with packaging weight 671g, with packaging size: 40*25*10CM 5xl size recommended height: 190CM, recommended weight: 80kg, opp bag, with packaging weight 700g, with packaging size: 40*25*10CM 6xl size recommended height: 195CM, recommended weight: 85kg, opp bag, with packaging weight 737g, with packaging size: 40*25*10CM 7xl size recommended height: 200CM, recommended weight: 90kg, opp bag, with packaging weight 760g, with packaging size: 40*25*10CM See the size chart for details Specifications: colorblackgreydark blue Fabric100% polyester Intelligent temperature control, Waterproof fabric can be cleaned in wash machine Safety, no radiation, no electric shock, 1 minute heat Warm and comfortable, charging treasure power supply Anti-drilling process, , energy-saving design Package Included: Heating vest*1 Notes: Both men and women can wear; 9 zones of fever, with 9 heating tablets; Waterproof fabric, hand washable or machine washable, and can be worn in the rain; Three-level temperature adjustment: high temperature 45, comfortable 35, energy saving 25