13 Gears adjustable temperature, USB power supply, keep out the cold and keep warm. 2Made of carbon fiber, waterproof, washable, wrinkle resistant and wear resistant, easy to wear. 3Put the power bank in the vest pocket and carry it with you to keep heating up anytime and anywhere. 4Keep the abdomen warm and improve gastrointestinal and lumbar disc problems. 5Comfortable, smooth and light material can easily match with your daily clothing.
