Materials:Nylon 85% + Spandex15% Pressure is 140D as 20-24mm HG For: People who sit and stand for long time People would like to keep the shape of let People who have varix People whose leg feels fatigue easily. Medical compression stokcing can promote the circulation of blood,and it's good for slimming your leg. If you suffer from edema,varicose or spider veins,phlebitis,deep vein thrombosis,venous insufficiency,or if you spend long periods on your feet at work,you will benefit from graduated compression therapy. Medical compression stockings helps: Reduce Swelling Enhance Circulatio Increasing blood circulation,Relieve Tired, Aching Legs & Feet Ease Discomfort from Varicose Veins Preventing venous stasis By providing maximum compression where it is needed most (at the ankle) and gradually lessening up the leg,circulation is enhanced.