SockGuy Mens Wool Crew 6' Bok Bok Cycling/Running Sock Bok Bok Large/X-Large Turbo wool! - 5 times stronger than wool alone! Keep your feet dry and insulated for the happiest toes you've ever had Stretch to fit sizing with easy fit cuff to fit all feet perfectly Superior softness and comfort to prevent blisters and hot spots Guaranteed superior quality in every sock