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. Polyester/Spandex/Polyester Suitable for All Footwear Low Temp. Machine Wash Only Polyester Ribbed Cuffs 3x1 sport rib 2x1 rib arch support constrast knit detail on top of foot basic rib on sole Extended cushion over tow cap & above heel cushion sole Quad detail 1x1 aerator mesh Polyester/Spandex/Polyester Suitable for All Footwear Low Temp. Machine Wash Only Polyester Ribbed Cuffs 3x1 sport rib 2x1 rib arch support constrast knit detail on top of foot basic rib on sole Extended cushion over tow cap & above heel cushion sole Quad detail 1x1 aerator mesh