Sport 150 fabric combines the benefits of ZQ-certified Merino wool with polyester, so it manages moisture, regulates temperature, controls odor, and dries quickly. Our Men's Merino Sport Tech Tee makes the most of those benefits and adds on other comfort-inducing features like mesh and vents in key areas to enhance breathability when you notch up the intensity, seams designed to help prevent chafing, and a regular fit that gives you room to move. With this tech tee, even when your sweat amps up, you'll still feel cool as a cuke.