Item specifics Condition: 100% New fine , High Quality Material : 80% spandex 20% nylon Size: S/M/L/XL 1 CM=0.39 INCH Approx. S:Ankle: 17-21cm;Calf:29-37cm;Thigh:40-48cm; M:Ankle: 21-24cm;Calf:37-39cm;Thigh:49-55cm; L:Ankle: 24-27cm;Calf:39-42cm;Thigh:56-59cm; XL:Ankle: 27-32cm;Calf:42-48cm;Thigh:59-65cm; Conversion :1cm = 0.393 inch 1mm = 0.0393 inch Color: Black/nude Pressure Rating : I: 15 25mmHg Package Includes:1 pc Note: please refer to Description for size details.Color may very slightly due to the color calibration of each individual monitor. Varicose veins socks is the one which has the function of promoting venous blood backflow heart products, it is a kind of medical treatment instrument, a kind of medical apparatus and instruments for the treatment of varicose vein diseases. It is not ordinary socks, and distribution of the function of it is by the force, in the flesh to establish the highest support pressure, up down the legs gradually diminishing, the calf to maximum stress value of 70% to 90%, reduced to the maximum pressure in ham place of 25%-45%, the diminishing the change of pressure can make lower limb venous blood backflow, effectively relieve or improve lower extremity vein and vein valve under pressure. Warm Tips:Varicose veins socks knee elbow pads products, such as advocates do not machine wash. Because any high quality products, only elaborate care can extend its service life, achieve the best effect of application of and also can't twist dry, stretch by hand is about the same. Recommended retail customers to buy two pairs or more, change in the way.