Newly upgraded zippers and magic stickersHourglass Sweat is durable, lightweight, and flexible, allowing for a wide range of movements while providing therapeutic heat compression to the midsection and back. More coverage, more sweat:Our Hourglass Sweat is wider than ordinary waist trainers to maximize your workout results and enhance your sweating experience. Made from extra-thick CR neoprene with reinforced trim lining for support and durability.