Now you don't have to sweat the cold, thanks to these Heat Factory Battery-operated Heated Insoles. It’s the best way to keep your feet warm while hunting, working—or enjoying any outdoor pursuit. Each insole uses a state-of-the-art wireless thermal technology with a built-in thermostat to keep feet warmed without getting hot to the touch, or too sweaty. Simply adjust the temp using the wireless remote control. Settings include: no heat (standby), medium (100°F), and high (111°F).