If you thought Merino wool’s benefits—including comfort, breathability, and odor resistance—were great, you’re gonna love what else this sock brings. With our Run Zero Cushion Ankle Socks, you also get Shred Shield™ technology to reduce wear from toes, mesh zones for enhanced breathability, a Virtually Seamless™ toe for enhanced comfort, and Indestructawool™ technology for extended durability. When you’re ready to put in mile after mile of training runs, this sock will bring the comfort and durability goods.Features Sock Height: Ankle Sock Cushion: Zero Cushion Indestructawool™ technology with extended durability zones 4 Degree™ elite fit system for a dialed-in, performance-oriented fit Mesh zones for added breathability Shred Shield™ technology reduces wear from toes Virtually Seamless™ toe for enhanced comfort Overall 3.25" height Made in the USA of Imported Yarn: 46% Merino Wool 26% Nylon 25% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.