As someone else has mentioned, people's reaction to cold varies quite a bit so it's hard to guarantee anything. This is probably overkill:




They're Ice Armour mitts. I wore them while winter camping last year at Superior National Forest in Northern MN. It was toward the end of the season so it was fairly mild. It only got down to -15 the first night. The nice thing about winter camping is that there are no bugs and no rain so you can skip the tents.

Dressing for spending a few days out in the cold is a different deal than dressing for spending 45 minutes on a bike.

In my case as long as I'm working fairly vigorously, my hands and feet won't have too much trouble keeping warm if they're dry. A pair of decent ski gloves usually works pretty well and there was a morning or two last year where the temp dropped to around -20.

While I was camping, I wore a thin pair of wool glove liners under the mitts. They were adequate on their own while we were snow shoeing. I kept the mitts clipped to my jacket. These mitts do have a zipper which I assumed was for ventilation if it got too warm. Maybe it was for a chemical warmer though.

One helpful tip I got from the winter biking forum really helped keep my hands warm during snowball fights with the kids. That is if you keep your wrists warm, the circulation in your hands will be better. Typically during a snowball fight I'd end up with snow packed between my gloves and wrists. Once I learned to keep the snow out of there, my snowball packing and aim improved dramatically since my fingers wouldn't go numb as quickly.

Oh, that tip has helped on the bike as well. Keep your wrists covered.