40-50 mmHg Compression is typically reserved for advanced conditions and should be chosen upon physician recommendation. Unlike regular socks, it needs to fit tightly in order to work their magic. Doctor-recommended, therapeutic graduated compression, sometimes more pressure is a good thing. Used for: Prevention and treatment of varicose veins, superficial vein thrombosis Edema, hematoma, other venous diseases of the pressure treatment For preoperative and postoperative patients,Prevention of deep venous thrombosis in long-term bedridden patients.Eliminate postoperative edema and promote wound healing.Restore the function of the lower extremity vein after surgery. Prevent recurrence of varicose veins. Slimming leg,The medical stretch socks also have the function of shaping the legs, avoiding the sagging of the fat on the legs The socks can help reduce leg swelling and discomfort and prevent varicose veins in the lower extremities. Occasions: travel, leg slimming, hiking, postoperative, yoga, work, run, fitness, take the plane,etc. Kindly Remind: For the first-time user or the elderly over 40, please kindly choose a bigger size you need. Attention: If you have symptom as follows, please consult the doctor before you use it. 1.The edema in the legs caused by other diseases 2.Eczema or allergic phenomena 3.Bad blood circulation 4.High blood pressure, nephropathy, heart disease