FEATURES: Moisture wicking, Anti Static, Anti Odor, 4 Way Stretch, Tag Free Label, Functional Fly, Elastic Waistband FABRIC: 40% Polyester, 34% Acrylic, 22% Rayon, 4% Spandex. Lightweight knit with a lot of stretch. The acrylic blend adds additional lightweight warmth that is comfortable against the body. FITTED: Please refer to photo size chart for waist, hips, and length measurements. Meant to be fitted to accommodate wearing under clothes (i.e. snow pants ). Great for running, skiing, hiking, hunting. COLD WEATHER: Lightweight warmth, these long johns can be worn invisibly as first layer underneath any other clothing. WASH CARE: Wash Cold Gentle Cycle with Like Colors, Tumble Dry Low, Non-Chlorine Bleach Only, Do Not Dry Clean, Iron Cool (if needed)