Mid-Lightweight Merino Wool ankle socks MEN'S HARRY Tagged “Concrete”. Heather Gray and black. 52% Merino Wool, 45% Nylon, 3% Spandex Size 11 Machine washable. Very little wear Sizing is based on shoe size, use for men’s 11 shoe size. Half sizes and wide feet size up. Made with our signature Mid-Lightweight Merino wool. Natural odor control. Reinforced terry loop cushioning. Strategic vent mesh keeping your feet cool and fresh all day.