Nike Spark Cushioned Unisex No Show Running Dri-Fit socks

93% polyester / 7% spandex Size: 9.5-11 womens / 8-9.5 mens -Data-Placed Cushioning: Runner-informed data was used to place underfoot cushioning where you need it most -Choose Your Fit: The arch is designed so you can wear the sock on the left or right, letting you find the right fit and cushioning for each foot -Stretch Support: Spandex in the heel provides a stretchy and secure feel. It's designed to help keep your foot supported as it hits the ground -Mesh at the top of the foot helps provide ventilation -Reflective stripe around the sock -Reflective elements