When bitter cold engulfs the mountains, we zip into the Marmot Shadow Jacket to stay warm and dry on frigid lift rides and high-altitude adventures along blustering ridge lines. Marmot's NanoPro membrane provides breathable, waterproof protection from wet snow and gusting winds, and the 700-fill down insulation keeps us warm through the coldest days of the season. Two zippered underarm vents offer convenient ventilation when the sun pokes its head out from behind the clouds, and the powder skirt keeps snow from sneaking into our pants while we ride through deep stashes.