Hunt-ready performance meets everyday utility in the Optifade Crew Sock. It's built with a merino wool fabric that maintains warmth even when wet, and it's reinforced with Cordura(R) at the heel and toe to reduce the strain of demanding pursuits. Performance zones throughout the sock provide a low-bulk fit inside boots without sacrificing comfort or cushioning, giving you comfort for miles. Optifade Crew Sock Optifade Cover M