Great mitt, keeps the snow out and heat in. I wore them today with some cold weather cycling gloves I have - it was between 20-30ish, but my hands stayed toasty. They'd probably be warmer with the included mitten liners. They have a strap to tether them to your wrist and the gauntlets are super easy to cinch up around your jacket sleeve. The left mitt also has a little rubber tab to squeegee your goggles. Wear the mitts, wear the liners, wear both, put your own liners in them... you've got a lot of options with these.