Great for layering underneath winter outerwear, this midweight crewneck shirt offers thermoregulation technology to help you stay warm and comfortable through a wide range of temperatures. Features flat seams to prevent chaffing, moisture management technology to keep you dry, and odor control technology to neutralize sweat and smells. A perfect companion to Terramar 2.0 Thermapeak Heritage Pants (sold separately). Terramar 2.0 Thermapeak Heritage Crew