80% Nylon+20% Spandex The thigh high compression socks utilizes the physiological characteristics of the human body to design gradient pressure, gradually reducing pressure from the ankle upwards,effectively relieving or improving the pressure borne by the lower limb venous valves,preventing the occurrence and development of lower limb venous diseases,and promoting lower limb venous blood reflux. 20-30 mmHg compression stockings thigh high for women & men provide graduated compression,100% pressure at ankle,50-80% pressure at calf,20-30 pressure at thigh,effectively improve the blood circulation - Keep leg muscles and veins properly compressed and promotes blood circulation in the lower legs, reduce pain and swelling. Functional: thigh high compression socks ideal for people with long term standing,sitting such as soldiers, teachers,surgeons and porters;Also suitable for Women in late pregnancy or obese individuals,pregnant women are prone to lower limb edema in late pregnancy, while obese individuals often have increased venous pressure in the lower limbs;Meanwhile perfect for people with long-distance airplanes,frequent business trips.Thigh high compression socks can promote venous blood return by applying appropriate pressure, reducing leg fatigue and discomfort Choose Correct Size: Measure circumference of ankle thigh,select the corresponding specifications/sizes based on the detail picture. Anti Slip Design:over the knee compression socks bundle mouth adopt of high-quality anti slip silicone, fits snugly to the legs and is not prone to slipping 20-30 mmHg Thigh High Compression Socks for Women and Men,Toeless Compression Stockings,Leg Compression Sleeve,Varicose Veins Treatment,Over the Knee Compression Socks for Travel Flight Pregnant.