WARM AND DRY :Dri-FIT Max fabric helps reduce wind chill by wicking sweat away from your skin to the fabric's surface, where it quickly evaporates. Mesh panels for optimum breathability. Ergonomic seams let you move naturally. DYNAMIC STRETCH : Lightweight spandex allows for natural range of motion in a wide variety of sports and training activities. Flat seams move smoothly against your skin . LOCKED-IN FIT :The tights' compression design provides a snug fit, allowing you to move freely and securely.