These Graduated Compression Thigh Highs are of 18-20 mmHg compression and are recommended for the prevention and treatment of varicose veins, other venous insufficiencies and blood circulation problems. These thigh highs have a lace top with three rows of silicone. Our collection of Graduated Compression hosiery offers the support you need - sheer, elegant and comfortable, and designed for the fashion-conscious woman who feels the physical pressures of an active lifestyle. Graduated compression provides firmer support at the foot and ankle, where you need it most, and gradually decreases up along the leg to the knee and thigh. This unique construction acts as a second heart - increasing blood circulation and preventing general body fatigue. They are an investment in your health and last much longer than regular hosiery. Graduated Compression Hosiery are ideal for people who: Work on their feet (i.e. waitresses, delivery people, sales associates, teachers, hairdressers.), lift and carry heavy loads. Travel or work in the airline industry, at the risk of developing venous disorders due to hereditary history. Are pregnant or have recently given birth and those who experience tiredness, aching and swelling of the lower legs. Our Thigh Highs come in sizes; S, M, L, XL and 2XL. Choose Beige, Nude or Black color.