Sleeping socks can't pressurize stovepipe locally, and words such as principles of venous flow mechanics are mostly used for conservative treatment of varicose veins in medical treatment. Sleeping socks are actually a kind of medical varicose socks. Varicose socks make blood return through different pressure sections of socks, and relieve the uncomfortable symptoms of legs. Although blood backflow is a way to promote blood circulation, when the body lies flat, the leg and the heart are at the same level, and the venous pressure in the leg almost disappears, so the partial pressure design will not work. In this case, wearing a sleep socks can only limit the blood circulation in the legs. If you tie your legs for a long time, it will make you nervous and not conducive to sleep. The stovepipe theory of sleeping socks is pure hype and has no scientific basis. The pressure of medical varicose socks on legs is caused by the deformation of elastic materials, and the coil length of elastic materials is designed according to different leg sizes and required pressure values. This partial pressure design helps the venous blood return of lower limbs through the gradual change of pressure, and effectively relieves or improves the pressure of veins and venous valves of lower limbs, regardless of stovepipe. Because some people have slight swelling in their legs, they will look thin in sleep socks, but when they take it off, they will show their true colors. Sleep socks's partial pressure design can prevent varicose veins when worn in daytime. However, if you don't take it off at night, you may have mild edema in your legs. Over time, varicose veins may appear.