The Sauna Double Belt Vest is a medium-sized, black gym shirt designed for men. Made from a combination of nylon, neoprene, and polyester, this weighted vest is perfect for gym training, weight lifting, and running. The vest features a sweat trainer design, making it ideal for increasing sweat and maximizing fat loss during workouts. It is a must-have for those looking to enhance their fitness routine and achieve their fitness goals. Made in China, this Sauna Double Belt Vest is a quality and durable addition to any fitness enthusiast's wardrobe.