Last winter, we were at a beer festival and ended up sticking those chemical hand warmers in our boots. And then we though, isn’t there a better way? Turns out, yes. The guys at Ravean have a whole line of vests, hoodies, jackets, and gloves that are heated. Their jackets have front and back heating panels, the heat is adjustable, your gloves can connect to your jacket, the material is water resistant and washable, and you can even use the jacket battery to charge your device.