HOT THERAPY FOR BODY WARMER: Built-in 5 pieces heat therapy pad quickly warm up even in the extremely cold weather. Great for all types of outdoor activities like snow sweeping, skiing, camping, hiking. And it also perfect for people who always feel bone pain in cold or rain day HIGH ENOUGH TEMPERATURE: 3 heat-settings provides widely and high enough temperature, which can be changed easily by one button. (blue LED color, 32-43°C/ 89.6-109.4℉; white LED Color, 32-47°C/ 89.6-116.6℉; red LED color, 35-52°C/ 95-125.6℉) SAFETY TO CHARGING AND WASHING: According to the latest technology, the heat pad is safety to wearing. And this vest will give you ultimate flexibility and breathability while also being water-resistant. It can be washed by hand but washing machine EASY-TO-GO DESIGN: Built-in pocket is designed to carry the power bank (not included). The heat pad can be heated fast within 3 minutes. Note: The heat pad turn on after long press the button for 2 seconds.