Celestron Elements ThermoTrek Rechargeable Hand Warmer Have nonheated gloves you wouldn't dream of parting ways with? Celestron's Elements ThermoTrek Rechargeable Hand Warmer ($21) will fit easily in the hand-warmer compartment of your current pair, providing six hours of warmth. No more going through packets of hand warmers — the ThermoTrek (which comes with a weather-resistant silicone cap) recharges with any USB port. Click here for more health and wellness stories, tips, and news. Image Source: rei.com Celestron's Elements ThermoTrek Rechargeable Hand Warmer $21 from rei.com Buy Now