Stay warm on the trail with the ThermoTank hand warmer. The 4400 mAh lithium ion battery provides up to an impressive 6 hours of continuous heat on a full charge. ThermoTank heats up quickly and reaches a maximum temperature of 113°F (45°C).

Unlike chemical hand warmers, ThermoTank can be recharged multiple times. Just plug it into the USB port on your PC or a compatible AC charger using the included cable. The rugged aluminum construction and protective silicone caps make ThermoTank perfect for cold weather excursions like cross-country skiing and mountaineering.