MTN OPS Athletic Fit & Stretch: Tailored to fit the body with plenty of multi-directional stretch to never feel restricted. Built with a slight drop-tail in the back to keep you covered Anti-Pilling Durability: Finished with an advanced Anti-Pilled treatment to maintain fabric integrity season after season Advanced Moisture Management: Moisture wicking fabric pulls sweat away from the body, keeping hunters dry and regulating core temperature All Day Sun Protection: UPF 50+ protection provides a critical UV barrier for long days in the elk woods or high desert Versatile Backcountry Layering: Use it as the ultimate standalone technical shirt for early season scouting staying out of the sun or a critical moisture wicking laying as the season progresses. + Fabric Contents: 185gsm // 96% Polyester, 4% Spandex // Size Large weighs 10.2 oz