Nike Elite Running Graduated Black/Volt/Volt Knee High Socks Shoes Fabric: 38% Nylon, 38% Polyester, 24% Spandex Helps reduce abrasion over your heel and toe areas with low-friction construction Features Dri-FIT fabric for ultimate moisture management to keep feet dry and cool. Increase airflow and sock breathability as you train with mesh panel ventilation Provides greater sock durability in high-wear areas with reinforced heel and toe Supports recovery and circulation with snug, compression fit. Enhances sock fit with left/right specific design Sock Size: XX Large = Shoe Size: Men's 14-16