Features： Using the latest carbon fiber and imported high-quality heating plate design, made of high-quality lightweight waterproof wind resistant materials, our electric heated vest is comfortable skin-friendly, touching smoothly and warmth better . No specific battery required. You can use your own power bank to charge the Body Warmer Clothes ,Powered by any portable charger(Low and safe voltage)，The USB plug is compatible with most power bank in the market.NOTE: No Battery Included. Built-in carbon fiber heating pads wrap you in warmth, efficient heated design make quickly warm up even in the extremely cold weather. 3 available heating settings can be adjusted with just a simple press of the button so that you can choose the temperature according to the environment temperature. Suitable for men, women, boys and girls. Ideal gift for family members, friends, employees,Help promote blood circulation, relief pain of muscles. Best gift for coming Thanksgiving and Christmas. Perfect for the daily commute outdoor activity, tailgating for your favorite football team, wearing underneath your heated jackets to enjoy snowmobile, motorcycle, mountain, camping, hiking, skiing .