Our high-performance ThermaskinTM Henley has a little stretch for greater comfort and better shape recovery. And Naturals are made of a precise blend combining the lightweight warmth, wicking, performace of nylon and merino wool to speed perspiration away from your skin and help maintain your body’s microclimate of heat — crucial for comfort in cold weather. Three button crew neck lets you adjust the warmth. Raglan sleeves allow full range of motion.