NIKE Spark Cushioned No-Show Running Socks (1 Pair) 58% Polyester/36% Nylon/6% Spandex Dri-FIT technology helps your feet stay dry and comfortable Strategic cushioning for targeted impact absorption; Y-stitch heel pocket for secure, no-slip fit Lightweight mesh on top enhances ventilation No-show silhouette with a tab for a low-profile feel; left/right-specific for an enhanced fit