The Tone Fitness Waist Slimmer Belt with Gel Pack can help tone the mid-section by increasing perspiration and providing support to the lower back. Tone curves and abs while trimming inches off your waist with this waist trimmer belt. A tried-and-true method for reducing unwanted inches by using the body's natural heat, this belt helps shed excess water as you exercise. The gel pack can be heated or chilled to alleviate aches and pains. Made of soft durable neoprene for comfort, the belt has a closure for a snug fit. This neoprene waist slimmer belt is thin enough to wear underneath clothing.