Anti Embolism Stockings (Thigh High) (Pair) AG provide graduated compression, which is strongest at the ankle and it gradually decreases as we move up. This controlled and graduated compression effectively stops any abnormal backflow of blood. They compress the outer walls of superficial veins to make them strong and prevent varicose veins. he compression stockings can help promote the circulation of blood, by delivering a controlled amount of pressure near the ankles and feet to prevent the clotting of blood. It can help alleviate pain caused due to tired, swollen, heavy or aching legs, ankles and feet. Made using a breathable, durable and extra soft material, the support can help discourage the formation of a blood clot.