The Selfkaire Kairetool is a deep tissue massager which claims to have a unique twist. You can use this handy device to knead tight muscles and resolve aches and pains, including stubborn issues such as lockjaw. As a massager, it’s brilliant. However, this isn’t all the Kairetool offers: this tool claims to firm up and slim down the massaged areas of your body, and there seems to be reems of users who agree!