The Smartwool Classic Hike Extra Cushion Medium Grey features extra cushioning for adventurers who need more padding in their favorite hiking shoes or boot. The sock includes Virtually Seamless™ Toe, smoothed out toe seams, flat knit toe seam for additional comfort, and elasticized arch brace for a secure fit. The sock comprises 56% Merino Wool, 11% Nylon, 31% Recycled Nylon and 2% Elastane.