Dannie (1306.2 days ago) I have a pair of the Shape-ups and love them! I am pregnant, so I am not expecting to see much muscle tone9since I am gaining weight), but they are very comfortable and give great arch & back support. I will say that I have noticed that my calves look more toned. I wear them to the gym and can really feel my muscles being worked when on the treadmill or elliptical-