When it comes to running socks, Smartwool pulled out all the stops to keep improving its products. With brand-new Shred Shield?? technology to help improve wear in the toe box, these PhD? Run Ultra Light Micro socks feature the 4 Degree?? elite fit system and Indestructawool?? technology for a dialed-in fit and improved durability.. . 49% merino wool/47% nylon/4% elastane. PhD?: Built for Performance in the Highest Degree. 4 Degree ?? Elite Fit System: Uses two elastics for greater stretch and recovery to keep the sock in place. Indestructawool?? technology features a patent-pending construction method for exceptional durability and comfort. Multi-sport design. Ultra Light cushioning. Body-mapped mesh ventilation zones. Virtually Seamless?? toe. Shred Shield?? technology, Smartwool's newest technology, reinforces the toe cap with minimal cushioning. The result reduces excess friction from the toe and around the toenails and increases durability three times. ReliaWool Technology, added to high-impact areas, provides longer-lasting protection to keep feet comfortable. . Made in USA of Imported Yarns.
