Palm-Sized Hand Heaters – This Frostbite-Preventing Handwarmer Goes Up to 104 Degrees in 60 Seconds

The Handwarmer was designed to supplement your efforts to layer gloves as an electronic accessory that delivers additional comfort. A little bit shorter and stouter than a pen, this device can climb up to a cozy 104°F in just one minute, giving you something to clutch to keep your fingers from freezing.