For buying varicose veins elastic socks, you can choose pharmacies or hospitals, which can buy regular varicose veins elastic socks, because varicose veins elastic socks must be used for medical purposes. Its principle is graded pressure gradient, that is, the pressure is higher in the ankle part of the socks and relatively lower in the thigh part of the socks, which can form a graded pressure gradient from bottom to top, obeying the direction of venous blood flow. So it can reduce the pressure of veins within varicose veins and reduce the phenomenon of varicose veins blood stagnation, thus can reduce the incidence of varicose veins. For treated varicose veins, it can effectively slow down the progression of the disease and at the same time can reduce the patient’s symptoms.