RelaxSan closed-toe medical compression tights provide firm graduated compression (23-32 mmHg - Class 2), which helps improve blood circulation in the legs. They help prevent thrombosis and embolism, treat mild chronic venous insufficiency, and reduce symptoms of thrombophlebitis and more severe varicose veins. These graduated compression tights are very comfortable, long-lasting and opaque thanks to the soft microfiber contained in their fabric, while the reinforced heels and toes and invisible flat seams guarantee maximum comfort and durability.