An excellent hiking sock, the Falmouth Expedition, with its wicking capabilities, will keep you dry, warm, and comfortable throughout your hike. Built-in arch support. Heavy-weight. Features a fully cushioned footbed. Breathable and warm for added comfort. Fabric: 74% Merino Wool, 25% Nylon, 1% Lycra Spandex Machine wash warm inside out, tumble dry low, and do not bleach. Made in the USA. Sold as 2 pairs per pack, 3 packs per unit for 6 pairs of socks total.