Dream Body Mens Sauna vest is made with 80 % neoprene and 20% nylon and has a zipper closure in front. Our sauna vest helps to burn fat and accelerate quicker weight loss. *** Benefits *** Enhances the abdominal and spinal support Helps with posture and abs during workout Can be worn as a thermal shirt in winter Can be worn underneath clothing to decrease waist and stomach area by 10 cm Promote excessive sweating Universal for all genders Durable Increase sweating Support Back Posture