This burly, fitted sock gives you protective padding in just the right thicknesses, where you need it the most. The reinforced toes, heel and shin pads allow you to lace tightly with no pressure and the merino wool fibers breathe, insulate when damp, and are virtually itch free. Made in the USA.Content: 60% merino wool, 33% nylon, 5% elastic, 2% lycraMens shoe sizes: Medium (5-8), Large (9-12), X-Large (13-15)Womens shoe sizes: Small (4-7), Medium (8-11)