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 1026 Women"s Comfy Sheer pantyhose at 15-20 mmHg with reinforced heel and toe. A great method of preventing chronic venous insufficiency and varicose veins, provide prevention of blood clots in the leg. Specially engineered with breathable material to provide comfort and allow maximum wear time without skin irritation. Designed to increase blood circulation and relieve lower body blood stress. Circulated pressure design to attain exercise and getting massage during regular walk at the same time! Gradually advanced pressure to embellish a beautiful leg! Ideal for travel and daily use. Specialized design ergonomics socks have a gradient of pressure to help driving blood back from feet to heart, and achieve the goal of reducing swollen legs and promote blood flow. Additional thickness added to the heel area to provide extra stability Features a figure flattering control top, and a soft non-restrictive sewn in waistband offering greater comfort throughout the day. Extra space at toe area to move around comfortably without restriction. Choose from Black, Brown, Burgundy, and Grey colors. Suitable for both formal and casual occasions. Material content: 25% Spandex, 75% Nylon. Sizing Guide: Please order by American shoe size: Small (5-6) Medium (6.5- 8.5 ) Large (9 and above)