These Nike socks features half cushioned, medium-density padding to provide impact absorption. Dri-FIT® fabric wicks away moisture to help keep feet dry and cool. Arch support offers a snug and secure fit. Anatomical left and right adds superior fit and cushioning. 53% polyester/23% nylon/22% cotton/2% spandex. Imported. Sizing: M fits men’s shoe size 6-8, women’s shoe size 6-10. L fits men’s shoe size 8-12, women’s shoe size 10-13. XL fits men’s shoe size 12-15.