Chemical hand warmers take longer ... the Zippo HeatBank definitely won’t fit in, say, your ski glove, but it has a handy hole at the bottom of the device that you can attach to a cord or ...

Matt Bento Ignik Hand Warmers ($10 per 10-pack ... While testing these on Teton ski adventures and Yellowstone wildlife-watching days where the Mercury dipped below -30 degrees, we were impressed ...

Luckily, I had really warm ski mittens, but if I took them off for even a second, my hands would immediately sting. In retrospect, I wish I had some hand warmers for extra warmth. If I were you ...

From heavy duty ski gloves to lightweight, tech-friendly mittens, these 8 pairs will help keep your hands warm and toasty. Best overall: Magne Mitt Heatwave Soundtouch Summit A touchscreen ...

The first 'reaction' that we tried for our hand warmer involved dissolving potassium carbonate (K 2 CO 3) in water. Potassium carbonate is one of the chemicals left behind in the ashes of burnt wood.