Nylon knee high socks are perfect for warmer climates and summer events. These black athletic socks are great for softball and other summer sports. Each sock has a finished welt at the top to help it stay where it's supposed to. An assortment of rich hues is available in adult sizes (socks sizes 11 - 13, shoe sizes 5 and up) at about 27 inches long. Made from 100% nylon, these are also called baseball sanitary socks, and are appropriate for sports of all types.