Men Sauna Vest Hot Sweat Waist Trainer Corset Neoprene Tank Top Shapewear Slimming Shirt Workout SuitProduct description How does this vest works and make you sweat like crazy, burn more fat, produce heat and weight loss: Firstly by raising your core body temperature, so your body has to work far harder to cool down and maintain a healthy temp. (this is called to thermo regulate). This process causes the body to burn off at least 50% more fat because of the extra energy (increased energy expenditure) your body uses to cool down and maintain a healthy