Nylon/Spandex Imported Pull On closure Machine Wash UPF 50: Our sun protective fabric blocks 98% of UVA and UVB rays, reducing skin exposure to harmful UV radiation. The result is a shirt you can play in without worry. Cooling Effect: Our Cool Elements technology helps transfer heat away from the body keeping you comfortable and cool on hot days. Fast Dry & Moisture Wicking: Don’t sweat it. Our fabrics dry quickly ensuring maximum comfort for hours. Lightweight fabrics wick away moisture from your body to the exterior of the shirt where it can evaporate more easily. 2-Way Air Circulation: Our unique fabric blend offers ventilation and improved breath-ability.