Despite the claims, there is no credible evidence that wearing toning shoes will make your legs more toned or cause you to burn extra calories. In fact, the Federal Trade Commission took action against one manufacturer for making deceptive claims about the benefits of toning shoes.
Toning shoes are designed to simulate walking barefoot or walking on an uneven surface. Manufacturers say the unstable design of the shoes forces wearers to use their leg muscles more -- which burns more calories and tones the muscles.
However, researchers have found no evidence that wearing toning shoes leads to improved muscle tone or greater energy expenditure. In addition, there are no studies that prove that the shoes improve balance or stability to a great degree.
In addition, the Consumer Product Safety Commission has received numerous complaints about foot, leg and hip pain associated with these shoes. Thus, toning shoes aren't a good fit for anyone who has problems with their feet or legs or has balance issues.