Hand warmers are typically sold as a pair. Just the front of each UT3 Lite heats up, but the back is a magnet so you can attach the two to use as a double-sided heater.

How Do Hand Warmers Work? Modern hand warmers are air-activated, meaning they only start working once you open up the packet and oxygen can seep inside. Once that happens, the oxygen reacts with a ...

It’s a simple chemical reaction creating heat and keeping you on the ski hills longer. We're talking about hand warmers! Here is everything you need to know about the tiny hot packs. “There is an ...

Most hand warmers are perfectly safe if used correctly. Anything working at a high temperature with a battery can be dangerous, but well-made hand warmers have gone through lots of testing to ensure ...

Using hand warmers that keep your fingers toasty can be the difference between a miserable day on the slopes and a memorable one. Not into skiing? Still, many of our favorite outdoor activities — ...

Nothing puts a damper on a fall or winter outing more than cold and frozen fingertips — that’s where hand warmers can come in handy. They’re great for outdoor activities like skiing, camping and ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Portable enough to fit comfortably in pockets or in your palms, hand warmers emit ...

If you typically run through an entire box of HotHands in a year, it’s probably time to upgrade to rechargeable hand warmers. These battery-powered options are surprisingly affordable and come in ...

We may receive a commission on purchases made from links. Everyone has their own methods for keeping warm in cold weather, whether it's cranking up the heat, throwing on extra layers, drinking hot ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. When temperatures drop, hand warmers might just be the ...

If you’ve ever spent hours in a late-season deer stand or mid-winter ice shanty—or any place outside in bitter weather for an extended period—there’s a decent chance you’ve dug out a package of hand ...