Made from ZQ-certified Merino wool, the Smartwool Men's Run Targeted Cushion Mid Crew socks naturally resist odors, regulate temperature, and offer breathability. And their comfort only goes up from there, because they're designed with feel-good features like the Virtually Seamless toe and the 4 Degree elite fit system for a dialed-in fit. Plus, Indestructawool technology helps these run socks go the distance. For better, more comfortable runs, be sure to choose the gear that works. FeaturesSock Height: Mid CrewSock Cushion: Targeted CushionIndestructawool technology with extended durability zones4 Degree elite fit system for a dialed-in, performance-oriented fitMesh zones for added breathabilityVirtually Seamless toe for enhanced comfort55% Merino Wool 40% Nylon 2% Recycled Nylon 3% Elastane