The SANKOM Patented Socks combine innovative functions, smooth material, and accomplished design. The result is outstanding wearing experience with a unique targeted compression and best quality. The product is the only socks in the world to both prevent the cause and fight the consequences of blood pooling. It is a revolutionary sock with stage-by-stage targeted compression which helps prevent the cause of venous blood stagnation and fight the negative consequences of excess blood in the lower body. They are composed of 4 gradual compression lines, that when pulled one after another will help improved blood circulation. Repeat the 4 stages regularly to activate the gradual targeted stimulation to improve blood circulation. It is suitable for men and women. It is clinically tested and proven to improve blood circulation in the body. Doctors recommended ideally for daily wear, flights, travels, driving, workout, pregnancy, and long sitting. Composition: 63% nylon, 13.5% spandex, 12% polyester, 11.5% viscose. This Product is Patented and endorsed by Swiss Medical Doctors. Extra benefits you will enjoy are hypoallergenic, breathable, RIP-resistant, ankle support, cushioned sole, arch support, shock absorption, and extra toe protection.