Over-the-Calf Full Cushion Merino Wool 70% / Nylon 26% / Lycra 4% Made in US 70% Merino Wool, 26% Nylon, 4% Lycra Spandex Generous sizing  Calf stretches 1 more than our traditional sock fit Ribbing above the ankle ensures a proper fit Ring toe construction for a comfortable invisible seam