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 PhD(R) Outdoor, these socks feature their top sock innovations and women's-specific fit, updated mesh zones, and increased durability, we'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. Fit & Design: Sock Height: Ankle Indestructawool(TM) technology with extended durability zones Sock Cushion: Light Cushion 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"