Fytto"s compression hosiery products use graduated compression to promote blood circulation and push blood from the lower limb back to the heart. Graduated compression means that the pressure is the highest at the ankle and eases along the leg. Compression hosiery can effectively reduce leg swelling and energize the body throughout the day. For those who stand or sit for long hours on a daily basis, Fytto"s compression socks can help you enhance your body conditions and reduce any discomfort due to blood circulation. Style 1066 represent the ultimate balance between comfort, utility, and support. They are expertly crafted with the finest material to improve comfort which allows you to wear them for extended periods of time without developing skin irritation. Balanced thickness with cotton feel and moderate pressure makes them perfect for increasing blood circulation to lower extremities without restricting movement. Specially design elastic band to allow maximum wear time without falling and skin irritation or leaving marks. Roomy "balloon toe" area to give extra space for toe to move around comfortably without feeling restricted. Improve blood circulation by graduated compression all the way from toe to calf, provides ankle a tight but comfortable compression, and prevents ankle from spraining or twisting. Ideal for both men and women that need increased blood circulation in their feet, ankles, and calves, also good for long periods of standing or long flight hours. Available in Black and White Colors. Suitable for both formal and casual occasions.Material Content: 65% Cotton, 25% Spandex, 10% Nylon. Sizing Guide: Please order by American shoe size: Mens: Medium(6.5 and under), Large(7- 8 1/2), XLarge( 9- 10 1/2), XXLarge( 11 and above) Women"s: add 1.5 to each size.