The material of the heating vest is comfortable and skin-friendly. To turn on/off, just long press for 3 seconds. To change the temperature, please press the button briefly. With the help of the heating vest, you will feel happy when doing sports outdoor and never worry about the cold winter anymore. Support Hand/ Machine wash. •[USB Powered] Powered by any portable 5V (low and safe voltage) charger, USB plug compatible with most power banks(not included) in the market •[Five Heating Zones] Built-in 5-piece heating tablets, back-1, waist-2, abdomen-2, it can help to warm the body, promote blood circulation, and relieve the discomfort of muscle •[3 Heating Settings] There are three temperature settings. According to your own need, it can be set as red light (65 degrees Celsius), blue light (50 degrees Celsius), white light (45 degrees Celsius) •[Widely Applicable] Perfect for outdoor activities like snowmobile, motorcycling, mountain climbing, camping, hiking, skiing, Fishing, Hunting or office routine, and business use during fall and winter months •[Fashion] It can be matched with your coat comfortably and easily. Very helpful to resist the cold invade and keep the body warm Specifications: •Gender: Men •Material: Neoprene, Flannel •Style: Modern •Heating Mode: 3 Modes •Collar: V Neck •Sleeve: Sleeveless •Closure: Zip •Design: Pockets •Occasion: Outdoor, Office, Travel, etc. Package included: •1 x Men Heated Vest