Soft Merino wool fibers keep you itch-free while drawing moisture away from your skin. The heavyweight knit cushions your foot on even your toughest treks. Spandex compression arch holds form and adds support Fully thermalined construction absorbs shocks and insulates Reinforced toe and heel add durability and longer sock life Smooth, flat comfort toe seam 77% Merino wool, 22% stretch nylon, 1% spandex Style #2097