ActionHeat uses innovative technology to warm your core body temperature with built-in heating panels that ActionHeat battery-heated apparel utilizes innovative technology designed to warm the core body temperature. These revolutionary garments feature built-in heating panels made with ActionFlex material, providing lightweight warmth, comfort, and versatility. ActionHeat garments use FAR infrared heating and ActionWave heat reflective technology to deliver hours of heat and comfort. ActionHeat allows you to stay warm and enjoy outdoor winter activities longer than ever before.