SKYFOXE Thigh High Compression Stockings Collection (Open Toe, Closed Toe, Footless) Women Men- Firm Support 20-30 mmHg Graduated Compression Socks with Silicone Band- Moderate Toeless Medical Support Hose Treatment Swelling, Varicose Veins, Edema In the 18th century, a businessman developed lower extremity ulcers due to severe varicose veins. He has a habit of going to the local famous hot springs to relax for a few weeks each year. The local hot springs can only stand in the bath because the springs are small. To his surprise, the ulcers on his feet were magically good after a few times in the hot springs every year. The businessman is a very thoughtful person who wants to know what cures his ulcer. So he did an experiment: taking the hot spring water home and taking a bath in the bathtub, the ulcer did not improve and standing in the bathtub of his home, the ulcer could be cured. Obviously, the cure of ulcers has little to do with water quality, but it is related to a standing bath. The businessman and his friends who studied physics swayed and understood the truth: standing in the hot spring bathing and standing in the tub have a common point, that is, the hydrostatic pressure generated by the water is the largest at the sole of the foot.From the bottom up, the thigh is exposed to the water surface, and the hydrostatic pressure is zero.It was this downward-up pressure that healed his ulcer. The ulcer on the businessman's foot is old. Can't always take the bucket for treatment? The merchant and the textile manufacturer cooperated to invent a compression stocking for treatment. The characteristic of the sock is that it is loose under the top, and the pressure is reduced from bottom to top after being worn on the foot.