W's Expedition Weight Fleece Zip-T

This hard-working, moisture-wicking insulation is essential to cold-weather technical layering systems. As underwear, it is particularly suited for the conditions of alpine mountaineering and winter waters ports. As outerwear, it is perfect for cool-weather hiking and climbing. Please note: Expedition Weight underwear is sized for an against-the·skin fit; buy a size up if you intend to wear it as loose-fitting outerwear.