Fit and Design: Performance fit hiking socks 3.25" ankle height achieves maximum comfort Made with merino wool to provide thermoregulation, sweat management, and odor resistance Comfort welt with 'stay put' fit keeps your socks where they need to be for the entire hike Light cushioning along the entire bottom of the sock enhances impact absorption on every adventure Additional body-mapped mesh zones help maximize breathability without sacrificing the perfect fit Technology: Indestructawool(TM) technology features a construction method that achieves exceptional durability and comfort 4 Degree(TM) elite fit system offers a dialed, performance-oriented fit with a flex zone at the ankle joint to keep your socks in place Virtually Seamless(TM) toe features smoothed out toe seams for ultimate in-shoe fit, stretch, mobility and comfort Additional Details: Machine wash warm gentle cycle Do not bleach Do not iron Do not dry clean