The Smartwool Performance Hike Light Crew Fossil is a lightly cushioned low ankle socks. The women’s sock is packed with innovative technologies, like the Indestructawool technology for enhanced durability, 4 Degree Elite Fit System and the Virtually Seamless toe for even more comfort. The women's-specific fit sock includes comfort welt and body-mapped mesh zones to maximize breathability. The crew height sock comprises of 56% merino wool, 11% nylon, 31% recycled nylon and 2% elastane.