Terramar Thermoregulation Long-Sleeve Tops

Engineered to insulate in cold weather and breathe when your body temperature rises, these thermoregulating tops from Terramar are great for skiing, snowshoeing, mountaineering, and more. The midweight fabric features an ultra-soft brushed surface and a four-way stretch for ease of movement. Plus, it’s been treated with the company’s ClimaSense technology, which wicks moisture, dries quickly, and inhibits the growth of odor-causing bacteria. The men’s Thermolator top is equipped with strategically placed mesh panels and a crew neckline, while the women’s Cloud Nine top has an entirely flat seam construction and a deeper scoop neckline. On both styles, functional thumbholes ensure coverage and a snug fit.

For more than 40 years, Terramar has been dedicated to producing one thing: base layers. From thermal bottoms to merino crews—not to mention socks and underwear—the product line comes from a team of scientists, gear heads, and designers whose single-minded pursuit of the perfect base layer has led to no fewer than six patented technologies. Whether it’s the way the fabric fits or the way it neutralizes odors, these innovations have revolutionized the active lifestyle.