The AFF Heated Safety Bomber Jacket features three panel nano technology heating elements and four heat level settings. The heat settings are indicated by colored LEDs and controlled by a press of a button. The heating elements are soft to the touch and flexible with no wires and is machine washable. The heat sensor is strategically located to accurately measure temperature and prevent over and under heating, the company says. Each jacket includes a USB port to connect to a rechargeable power bank (power bank not included). The jackets are waterproof, windproof, and available in hi-vis yellow and hi-vis black.