Men's RFL Over-the-Calf Ultra-Lightweight Sock Black

Men's RFL Over-the-Calf Ultra-Lightweight Sock from Darn Tough breathe easy. Bringing together smooth Merino Wool feel, next-to-skin fit, flex and fatigue-zapping arch support, and targeted venting — the ultra-lightweight RFL is the sock experience your hard-charging feet have been dying for, lap after lap. Fabric: 55 % nylon, 40 % wool, 3 % elastane