RelaxSan standard medical compression knee high socks exert moderate graduated compression at the ankle (15-21 mmHg Â Class 1), with the level of compression gradually decreasing up the garment. All the knee high socks of the RelaxSan medical compression stocking line are produced with extremely high-quality yarns and are therefore very durable and soft. The flat seams provide you with maximum comfort, while the soft elastic bands under the knees do not squeeze your calves and prevent the knee highs from rolling up. Finally, the anatomically shaped heels and the reinforced toes guarantee perfect fit and the correct distribution of compression. Standard size and closed toes.