Features： 1、3 Gear Temperature Adjustable: This vest has a temperature adjustable range from 30℃ to 50℃. 30℃ blue light energy saving gear, 40℃ white light comfortable gear, and 50℃ red light warm gear. 2、Washable: This vest is washable that both hand wash and machine wash are ok. Remember to unplug the mobile power supply and remove the intelligent thermostat. 3、Lightweight: This is a lightweight heating vest that it can help you keep warm easily, and you do not have to wear heavy winter clothes all winter. 4、2 Function Button: There is a dual use button that for on off and gear adjustable, 3s press for turn on and turn off, other presses for gear adjustment. 5、Best Choice: This vest is the best choice for you whether you are outdoors, hunting, skiing, or staying in the office, it is your ideal choice. Specification： Item Type: Electric Heating Vest Product Material: Polyester Fiber Product Color: Black Applicable to: Elderly daily work, overtime and cold protection, female protection, street work, winter travel, outdoor duty. Package List： 1 x Electric Heating Vest