Take on the cold weather in the Run Cold Weather Targeted Cushion Crew Socks. Featuring our most advanced sock technologies for enhanced durability, breathability, and comfort. Plus, a crew height for a convenient way to add extra warmth under tights. You can go far and feel good no matter the temperature outside with these cold-weather run socks along for the ride.Features Sock Height: Crew Sock Cushion: Targeted Cushion Indestructawool™ technology for enhanced durability 4 Degree™ elite fit system for a dialed-in, performance-oriented fit Body-mapped mesh zones for added breathability Virtually Seamless™ toe for enhanced comfort Crew height adds extra warmth under tights Made in the USA of Imported Yarn: 56% Merino Wool 13% Nylon 28% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.