Any socks that carry the Timberland PRO name have to be rugged and ready for anything the work site brings. These socks are built for hard-wearing guys who need all-day comfort and protection.3x1 sport rib2x1 ribQuad detail 1x1 aerator meshMarled sole2x1 rib arch support constrast knit detail on top of foot basic rib on soleExtended cushion over tow cap & above heel cushion soleRecycled polyester