The Worlds Softest Classic women's crew sock is thick, cushiony, and undeniably soft. The sock features a reinforced heel & toe, flat knit toe seam, and tops that stay up without slipping or binding. This crew length sock features a fully cushioned footbed which provides all-day comfort. It is made of 75% ultra-soft acrylic, 23% nylon, 1% Lycra®, and 1% polyester.