1.What are compression stockings? Medical elastic stockings are designed to prevent blood flowing back to the heart by gradually decreasing the pressure from the ankle upwards to contract the calf muscles, so as to sculpt the leg shape, beautify the curve, improve the carrot leg and prevent varicose veins. Medical compression stockings establish the highest support pressure at the ankle and gradually decrease upward along the leg. In the calf, the compression is reduced to 70%-90% of the maximum pressure, and in the thigh, it is reduced to 25%-45% of the maximum pressure. This decreasing pressure change can make the lower limb venous blood return, effectively relieving or improving the lower limb veins and venous valves under pressure. 2.What are the functions of elastic stockings? 1) Eliminate the swelling and pain caused by varicose veins and lower extremity venous blood return obstruction, so that the varicose degree becomes lighter and the tortuous veins no longer aggravate. 2) Prevent deep vein thrombosis in the lower limbs of bedridden patients. 3) To eliminate lower limb edema in pregnant women in late pregnancy and to prevent lower limb varicose veins and deep vein thrombosis in women after delivery. 4) Prevention and treatment of economy class syndrome in air travelers. 5) It can reduce the discomfort of lower limb soreness and swelling and prevent varicose veins of lower limb for those who stand, sit and work for a long time. 3. What are the types and choices of elastic stockings? According to the wearer’s leg symptoms, choose the appropriate compression of elastic stockings: elastic stockings are divided into the following levels of pressure: first level of low pressure preventive health care type (15-25mmHg): applicable to the health care prevention of varicose veins, thrombosis high incidence of people; first level of medium pressure initial treatment type (25-30mmHg): applicable to the initial varicose veins patients; second level of high pressure moderate treatment type (30-40mmHg): applicable to Patients who already have obvious varicose veins in the lower extremities (veins protruding from the skin surface when standing) with leg discomfort (such as soreness and swelling of the lower extremities, eczema and itching, cramps and numbness, pigmentation, etc.), phlebitis, severe varicose veins during pregnancy, patients after varicose vein surgery (saphenous vein stripping), patients with post-deep vein thrombosis syndrome; tertiary hypertensive severe treatment type (40-50 mmHg): for patients at the initial stage of varicose veins; secondary hypertensive moderate treatment type (30-40 mmHg): for patients at the initial stage of varicose veins; secondary hypertensive moderate treatment type (30-40 mmHg): for patients at the initial stage of varicose veins 50mmHg): for patients with high swelling, ulcers, blackened and hardened skin, high lymphedema, and recovery period after plastic liposuction of lower limbs.