Features: Men's and women's zipper compression sock-15-20mmHg gradient zipper compression sock can compress the ankle to the extent and gradually reduce the pressure on the calf. This pressure reduction can reduce the venous return of lower limbs and effectively relieve or improve the pressure. Segmentation pressure promotes our blood cells to flows more fully. To prevent deep vein thrombosis in patients who have been in bed for a long time. For long standing, sitting and heavy physical work, compression socks can reduce discomfort of lower limbs and prevent varicose veins of lower limbs. Suitable for people who love beauty. elastic silk stockings also have the function of shaping legs, preventings the fats on legs from being pulled down, and even have the effect of slimming legs. 7 size professional design - made of nylon and spandex fabrics, which are comfortable, breathable and durable. Each pair of socks has a strong zipper to ensure a comfortable fit. It will help promote aircirculation and improve performance. The 7 sizes can meet the choice of most people.Spacious open toe and zipper design: The model design of open toe has a spacious toe, which is designed for patients who need extra "clearance". The stockings have zippers for easy on and off. The most amazing and best gift - standing for a long time: teachers, traffic policemen, guides, beauticians, nurses, etc. People sitting for a long time: IT staff, white-collar workers, civil servants and other workers standing or sitting for a long time: due to muscle fatigue, the blood flows to the lower legs is not smoothes, and the increase of blood viscosity leads to venous disease of the lower limbs. Notice:Actual color may be slightly different from the image due to different light effectPlease allow 1-3cm deviation due to manual measurementSize: As picture show