My brother talked me into doing this snow shoe marathon with him. The furthest I had ever run in my life was 5 miles...two days before the race. It was something like 14 degrees outside. My brother wanted to try out some new fabric "Gator Skins"
www.gator-skins.com for the adventure and he handed them to me 10 minutes before the start.
We started out the race with the Gator-skins and a T-shirt on top. We quickly pulled that off as we were over-heating and did the entire race with the Gator-skins and nothing else. They are made of a new, high-tech polyester fabric where the weave opens at 80 degrees to let the heat out. It also closes if it gets too cold to keep the heat in. When you first put them on you could feel the breeze come right through. In a few minutes they blocked most of the wind.
They wicked the sweat away quickly and never "hung" or felt clammy. They were awesome. We ran through bushes, brambles and up the side of a mountain and never had them snag or tear. Finally, thank heavens, they didn't chaff.
You can see here at the end of the race we had thrown the snow shoes overboard. Notice our shoes are a solid block of ice.