Be careful out there.
Of all the things to hear about after I just bought a heated vest and gloves…
Vests and gloves may be safer given the lack of stepping on them. (My reasoning is motivated.)
I was born and raised in northern mn. I remember winters when it hit -40. So cold it seemed the world operated on a slightly different set of parameters. Metal became brittle. Liquid fuels became solid. Trees would explode in the night as the sap finally froze. So trust when I say forget the gimmicks, the dodgy heating schemes.
Layers is the way. Wear dress socks under regular socks under big old wollies. Wear a T-shirt under a long sleeve under a collared under a sweatshirt. You catch my drift. Anything beyond the occasional chemical mitten warmer packet thingys is suspect at best.