LARGE (Fits 7-12). MEDIUM (Fits 4.5-8.5). 42% Cotton, 48% Polyester, 7% Nylon, 3% Lycra. Stay comfortable and supported all day long with performance-optimized arch support. Enjoy enhanced comfort with seamless socks featuring hand-stitched toes. Original Art by Jimbo Phillips. Available in Medium4.5-8.5, .