Merrell Men's Fraxion Socks 58% Merino Wool, 25% Nylon, 13% Nanoglide Nylon, 4% Lycra Elastane Made in US Targeted cushioning in heel and forefoot NanoGLIDE Technology is plaited in the heel and toe for added durability Arch band support to fight fatigue All over mesh inlay plaid pattern Seamless toe closure for comfort