Playing can take a toll on your favorite leggings. Chalk drawing, bug inspecting and dancing put added stress on the fabric covering your knees, so we reinforced the area to help you play worry-free. And to keep you cool, Nike Dri-FIT Tech helps you say goodbye to sweat. See Ya, Sweat!:Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. Snug Comfort:Smooth, stretchy fabric and a wide elastic waistband lay flat against your skin. Plus, they layer easily under shorts or a uniform. [] Product Details:Body:90% polyester/10% spandex. Overlay:84% polyester/16% spandex. Mesh:92% polyester/8% spandex. Machine wash. Imported. Style: FJ6821; Color: Black/Black/White; Size: XL; Gender: Male; Age Group: Kids | Nike Pro Dri-FIT Big Kids' (Boys') Tights in Black, Size: XL | FJ6821-010