Neoprene fabric tones core by increasing thermal temperature and calorie burn to maximize weight loss performance. This waist trainer vest will stimulate sweating around your abdomen and lower back area, accelerate the belly fat burning process. The sweat vest can flatten fat belly and stomach, burning and tummy control. Full and Double Coverage for the tummy, compression, correct your posture and helps you sweat rapidly for fat. High-quality zipper design, double-adjusting closed belt can strengthen the abdomen and adjust the pressure around. The zipper and belt can be sewn together during exercise so you don't have to worry about the belt coming off.