This open half-tube sock is a summer limited version of Dai Yazhen's classic thin leg socks. On the basis of meeting the original product functions, it allows toes to move freely, which is very suitable for those who do not like to bind their toes. The man ~ The pressure from the foot to the calf decreases spirally, which has the effect of spiral circulation decompression. After wearing, the pressure on the ankle is the largest, followed by the calf, and the pressure on the sock mouth is the smallest, thus playing the role of "pump" and effectively promoting the blood circulation of the leg. Eliminate leg puffiness and treat varicose veins (Japanese Medical Certificate No.: