This updated next-to-skin layer is engineered for alpine athletes who refuse to compromise on comfort and performance. The Men’s Summit Series Pro Baselayer Crew helps maintain body temperature during rugged ascents and delivers targeted moisture management through our innovative DOTKNIT™ technology. We built this layer with a new wool-blend fabric for natural odor control and used texturized threads for a soft feel during multi-day expeditions. Slim-fitting. Mobility-focused. This is the foundation of every mountain kit.