A waist trimmer is something you buy in order to support, cushion, and compress your abdominals and lower back in the right position to improve your gait, lose inches off of your waist, and reshape your body so that you’d have washboard abs when everything is said and done. It’s also therapeutic and can relieve arthritis or sore muscles. Specifically, the McDavid 491 Waist Trimmer (View on Amazon.com) is a waist trimming device that can help you lose weight or reduce back and abdominal pain. It’s heated so that your waist can sweat those calories, toxins, and fats out. It’s also made of latex-free neoprene, thus ensuring strong construction and long-lasting durability. It can also be easily adjusted to fit waists that are up to 40 inches large.