The Kewlioo Women's Zippered Heat Trapping Sweat Vest in size S/M is a versatile and stylish piece suitable for fitness, running, and yoga. Made with a blend of polyester, spandex, and polyurethane, this one-piece vest provides comfort and flexibility while trapping heat to enhance the body's natural sweat response. The black color and sleek design make it a fashionable and functional addition to any workout wardrobe. Made in China, this vest is a new product that promises to help you reach your fitness goals with its innovative technology and high-quality construction.