Flag Socks, Cotton Low Cut Gmark Unisex No Show Running Socks 1,2,3,4,6 Pairs M,L Super lightweight and soft texture fabric of 85% Cotton, 12% Nylon, and 3% Elastic TWO SIZES: Medium-8.27in (21cm); fits US Men's shoe size 6.5-8.5 and Women's shoe size 6-8;Large-9.06in (23cm); fits US Men's shoe size US 7.5-10.5 and Women's shoe size 8.5-11.5. 200-PIN FABRIC: Our no show socks are made from 200-pin durable and long lasting fabric, which is super smooth and soft, and will not deform even after multiple washings. LOW CUT: 100% invisible in sports shoes. Wear no show socks with your favorite golf shoes, dress shoes, deck shoes, boat shoes, running shoes, climbing shoes, athletic shoes, or any of your other favorite shoes. 200-PIN FABRIC: Our no show socks are made from 200-pin durable and long lasting fabric, which is super smooth and soft, and will not deform even after multiple washings. SUITABLE SPORTS: The cushion socks provide strong protection for your feet, which are ideal for sports activities like tennis, hiking, running, etc.