Broadly speaking, there are two types of hand warmers: battery-powered and chemical (including disposable and reusable options). Battery-powered hand warmers can be as heavy as a baseball and as ...

Not a strong showing, considering that most of the hand warmers we tested last at least 8 hours. However, the HotSnapZ did hold heat longer than the similar low-tech option, Hot To Go Reusable ...

They’re easily activated via exposure to air, making them great for everyday outdoors activities like running, walking, dog walking and more.These hand warmers are also reusable for multiple ...