Super-Wool Hiker GX Low-cut 1/4 Hiking Socks (3 Pairs) 74% Merino Wool, 20% Nylon, 6% Lycra Spandex Impact Support Zones(strategically reinforced zones) for added durability Arch Support, Double Cuff and Contoured Half Cushion for superior fit, comfort and protection Pre-Shrunk Merino Wool - We use the best quality wool from Australia for amazing softness and warmth Made in Canada