DeFeet Aireator Team Socks - 6 inchThe Aireator is known as the "original air flow sock" due to its durability, wicking, drying, and air permeability. Affordable and incredibly durable Open mesh construction on top of the foot is breathable and wicks well Thin throughout for a lightweight feel and to help maintain an efficient, close fit Gender Age: Men's Size: Small, Medium, Large, X Large Material: Synthetic Season: Warm Weather Cuff Length: 6"