Waist Trainer For Men Reversible Neoprene Shapewear Workout Suit80% Neoprene 20% Nylon Sauna vest intensifies perspiration in your core by up to 3 times more than regular gym clothing, fits snugly around your midsection, working its magic from your shoulders, down to your waistline, helps posture for back and abs as you workout 10mm Neoprene not only produce heat to make you sweat like crazy when you workout, but keeps you body warm during cold days with minimal thermal cover, if you work in a cold place you are