Utilize carbon fiber heating elements to create and distribute heat to the upper left and right chest and back, providing hours of core body warmth and continuous heat even in cold winter. Adjust 3 heating settings (High, Medium, Low) with just a simple press of the button.

 Quality cotton blend fabric exterior with fleece lining ensures you don't lose any excess heat. You don't need to wear bulky thermal underwear. The fabric is made of waterproof and windproof materials, allowing you to enjoy unlimited outdoor sports without restrictions.