Over-the-knee style Flat knit Comfortable cotton blend Available in Navy, Black, Charcoal, White Over-the-knee socks for your child's school uniform come in several essential colors to ensure your child remains compliant with the dress code. The over the knee style and the smooth, flat fabric provide the look of opaque tights. The cotton-blend fabric ensures daylong comfort, while the hint of stretch ensures that your girl won't need to keep pulling them back up all day long.