They promote circulation and blood return. Compression stockings Thuasne brand in size 4 cataloged medical article. They are designed with elastane to make them easy to put on. They have been developed to prevent the appearance of venous disorders and mild symptoms of tired legs and occasional oedemas. They provide external pressure on the veins to get the valves to regain their function and improve blood circulation. It exerts a passive resistance to leg swelling that relieves pain and heaviness. They are indicated for people with varicose veins or after surgery or sclerotherapy for a compression of 20 to 27 mmHg. They do not leave a rubber mark on the calf and the toe cap does not compress the toes. Hand or machine wash on delicate 30º with reduced spin.