Totally trail ready. With these crew socks, Smartwool envisions the trek ahead, crafting them from a moisture- and odor-controlling merino blend, strengthening the construction with Indestructawool(TM) and 4-Degree(TM) Elite Fit technologies, and eliminating hotspots and chafing points. So, once you have a destination picked out, pull these on and then lace up your best hiking boots for a smoother trailhead-to-peak journey. 64% merino wool34% nylon2% elastane. Premium yarn construction. Indestructawool(TM) uses a proprietary, patent-pending yarn for improved durability and comfort. Medium cushioning offers extra support and warmth. 4-Degree(TM) Elite Fit System improves stretch and prevents socks from bunching, thanks to dual-elastic construction and flex zones. Virtually Seamless(TM) toe lessens chafing. Achilles strap for extra protection. Crew height. Women's-specific fit. Machine washable. Made in USA.