Tommy John Men's Sleekheat Long Bottoms 57% Polyester, 37% Viscose, 6% Spandex Imported Machine Wash Temperature Control - smart fabric that keeps you warm outdoors without overheating indoors Streamlined Fit - hugs the body but never restrictive Stay Dry - modern, smart stretch fabrics prevent moisture build-up Premium Fabric - silky soft, featherlight, and non-pilling