From SmartWool, this T-shirt features: Slim fit that is intended to follow the contours of the body Crew neckline Long sleeves Fabric that combines the moisture management, temperature regulation and odor resistance of Merino wool with TENCEL™ Lyocell fiber Mesh ventilation to help keep the body dry and comfortable during high-intensity activities Works with a body in motion and helps provide supportive fit for performance and training Minimal seams designed to help reduce chafing and allow you to work out distraction free Pullover construction Merino wool/TENCEL™ Lyocell/polyester/elastane Machine wash/tumble dry Imported.