55% US Merino wool, 43% US Nylon, 2% US Lycra Spandex U.S. Merino Wool: We source our 100% U.S. grown merino wool exclusively from sheep raised by American farmers on American farms. Merino wool keeps you cool in the summer and warm in winter. Targeted Light Cushion: High-density cushion targeting critical performance areas throughout the sock. 3/4 Crew: A slightly shortened crew that fits just below the calf but above a hiking boot Seamless Toe Closure: Advanced knitting techniques create a totally flat connection in the toe box, reducing bulk and eliminating blister-generating friction. Durability Assured: Reinforced construction and low-stress seam placement reduce wear and tear, increasing the life of the sock. The Farm to Feet Damascus Full Cushion Hiking sock is a favorite of hikers and backpackers who prefer full cushion and a lower height. Farm to Feet's most technically advanced hiking sock features a 19.5-micron Merino wool knit that naturally regulates temperature. Farm to Feet is committed to the single, simple goal of creating wool socks using an All-American recipe of materials, manufacturing, and workers.