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.