Wrightsock&';s Ultra Thin Tab Socks are made to bring you ultimate comfort with the thinnest socks on the market. Thinnest single layer sock that provides a second-skin feel. The perfect running or walking sock, Ultra Thin Tab Socks are great for all aerobic activities and for racing and x-country flats. If you are looking for thin socks that will wick away moisture keeping your feet dry, look no further than the Ultra Thin Tab Socks from Wrightsock. Created to fit your foot like a glove the Ultra Thin Tab Socks are light, comfortable and offer a Y Heel that promotes an anatomically correct fit. SINGLE LAYER SOCKS FEATURES Recycled Polyester fibers for socks that keep the foot cool and dry Seam Free Toe for added comfort Y Heel promotes an anatomically correct fit Favorite socks for the minimalists Perfect cycling, training or walking socks. Blister resistant material THIN SOCKS FIBER CONTENT 68% Recycled Polyester, 24% Nylon, 8% LycraA(R) THIN SOCK SIZING GUIDE Finding the right fit is essential to prevent blisters! You can view our sizing chart below. We invite you to contact us for any additional information or head to our FAQ page to find the answers to common customer questions. As an American-made, family-owned business, we thank you for choosing Wrightsock running socks.