lightweight yet durable, pilling-resistant fabric keeps the body warm and dry, full heating power reached after just 2.5 min heating elements in the chest and back, powered by rechargeable L4 USB REDLITHIUM™ battery technology, illuminated LED control to switch between 2 heat settings with a single touch, durable, with raglan sleeves and seamless shoulders for maximum mobility and comfort, up to 180 minutes of heat on the low heat setting, L4 battery holder is hidden in the battery pocket for optimal comfort, machine washable