Gloves don't always keep you warm enough, which is where some of the best hand warmers may help. We review some well-known ...

The best reaction for use in our hand warmers was the 'slaking' of lime. It generated enough heat for our purposes, and involved chemicals (water, calcium oxide and calcium hydroxide) that are ...

Disposable hand warmers like HotHands that use chemical ... Plus, its aluminum and ABS construction make it dust, drop, and water-resistant, so you won't need to be afraid to take them with ...