The toning shoes were all the rage a few years ago and still continue to be popular. The purpose of the toning shoes is to give the body and extra workout when wearing them. They achieve this by having features on the shoes, such as a rocker bottom that makes the muscles work hard as the shoes are unstable. There is certainly debate if this actually happens or not and if this is beneficial or not and there has been a number of legal settlements as a result of the marketing claims and hype not matching the scientific research. Having said that, many people find them useful and swear by them. Others don't like them.