Nike Elite Run Lightweight 2.0 Quarter Length Socks Shoes fabrics Dri-FIT fabric helps keep feet dry and comfortable; Y-stitch heel for a secure, snug fit that prevents sliding Reinforced heel and toe for durability in high-wear areas; Flat seams feel smooth against your skin Reflective details for enhanced visibility Left/right specific for an enhanced fit Dri-FIT 52% polyester/42% nylon/6% spandex. Imported