Approximately sizing is unisex US man shoe 8-12.-------It's 100% finest sustainable organic yak wool socks made by group of Mongolian textile women in Mongolia. They would be warmest gift, bed socks, mountain hikers socks, winter and boots' socks, etc... Mongolian yak wool is a super-strong natural fiber that's incredibly soft and will keep you warm in the winter and breezy-cool in the summer. The organic fiber has natural moisture-wicking properties that will keep your feet dry and cozy on your next cross-continental flight, hike, or bike trip. If you want to add unique socks to your socks' collection it would be a good idea to have Mongolian yak wool socks.~ 🧦Properties: 🌱🌱🌱🌱Organic fiber 🔥 🔥 🔥 🔥 🔥 🔥 Warm ☁️ ☁️ ☁️ ☁️ Soft 🌏 🌏 🌏 🌏 Eco friendly 🐂🐂🐂🐂 Cruelty-free 👌👌👌👌 DYE-free 💫 💫 💫 💫 Wrinkle-free 🧶🧶🧶🧶 Scratch-free 🧦 🧦 🧦 🧦 100% UV protection 🧦🧦🧦🧦 Long clothing durability 🧦 🧦 🧦 🧦 Low pilling 🌟🌟🌟🌟 High-quality 🦶 🦶 🦶 🦶 Gentle on feet 👍👍👍👍 High breathability ~CARE INSTRUCTIONS: ~Machine wash gentle cycle cold water. /DO NOT AIR DRY/, dry clean or hand wash cold. -Do not bleach. ~Lay flat to dry. ~We are proud to introduce Mongolia's finest products to you. Stay warm🔥🔥🔥🔥