With a mid crew height and a comfort welt with “stay put” fit, the Performance Hike Light Cushion Mid Crew shows just enough of its personality above the shoe while protecting all of your comfort inside of it. This sock features Indestructawool technology for increased durability, updated mesh zones for less pressure, and a 4 Degree elite fit system to match your foot just right. Plus, with the comfort of sourced Merino wool, these men's wool socks will elevate any hiking experience. IndestructawoolIndestructawool technology features a patent-pending construction method for exceptional durability and comfort. 4 Degree Elite Fit SystemUses two elastics for greater stretch and recovery to keep the sock in place. Virtually SeamlessSmartwoll have smoothed out there toe seams for ultimate in-shoe fit and comfort. This technology is found in Smartwool ́s Performance and Everyday socks.