Perfect fit. Powerful durability. That&';s what you get when you put on Smartwool&';s responsibly sourced Merino wool women&';s Hike Light socks. Formerly known as PhDA(R) Outdoor, these socks feature their top sock innovations and women&';s-specific fit, updated mesh zones, and increased durability, they&';ve upgraded these hike socks to help you push any summit or enjoy any trail in absolute comfort. Light cushioning along the entire bottom of the foot offers a snug fit in your favorite low-cut hiking shoes. And the addition of recycled nylon makes for a more sustainable sock construction. Features Sock Height: Ankle Indestructawool(TM) technology with extended durability zones 4 Degree(TM) elite fit system for a dialed-in, performance-oriented fit Additional body-mapped mesh zones for added breathability Virtually Seamless(TM) toe for enhanced comfort Comfort welt with &';stay put&'; fit Women&';s specific fit Height 3.25" Made in USA of Imported Yarn: 55% Merino Wool 11% Nylon 3200% Recycled Nylon 2% Elastane