●COLD WEATHER BASE LAYER. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% Merino wool to keep you comfortable and temperature regulated as you enjoy high-intensity skiing, hiking, running and more. ●SLIM FIT. Designed to meet the demands of outdoor adventuring, this slim fit quarter zip shows off a slimming silhouette while offering unrestricted movement through the arms and chest. ●MERINO WOOL. Soft and eco-conscious, wool is a sustainable wonder fiber that wicks moisture away and helps regulate body temperature from cold-weather camping to summer hiking. ●FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you trekking comfortably — a back body seam wraps to the front for a body-enhancing fit while a flatlock seam construction minimizes chafing. ●GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity.