Brooks Glycerin Ultimate Cushion Socks Socks Asphalt : Just like their parent shoe, the Glycerin Ultimate Cushion socks are all about maximum comfort all day long. These low cut socks feature a mesh zone at the top of the foot for targeted breathability. A cushioned tab helps to prevent irritation at the achilles while plush underfoot cushioning offers a comfortable feel. Includes targeted arch compression. Features anatomical left/right construction. Made with DriLayerA(R) quick-drying yarn. Medium: Women's 7-9.5 / Men's 6-8.5 Large: Women's 10-12.5 / Men's 9-11.5 Extra Large: Men's 12-14.5 *U.S. shoe size equivalent.