These high-quality socks keep your feet cooler in summer, warmer in winter. Extremely comfortable, they also help prevent athletes foot and foot odor. As a material, silk doesn't have much stretch, so these socks are made with a nylon thread surrounded with silk (see image). So the only material that comes in contact with your skin is silk. Tube type with no shaped heel, ensures good fit across a range of sizes. They come in several plain colors. Single pair (packaging may vary from that shown, depending on our supplier)Sizes: 22cm-24cm (US Womens 6-8 shoe size. See our size charts for Jpn/US/UK/Eur size comparisons)Color: Pink, Gray, Light Blue, Beige, BlackMaterial: 100% Silk-coated nylonCare: Do not bleach. Gently hand wash in 35~40 degree water. If you wash them in a washing machine, place them in a laundry net. Air dry inside out.