Zipper closure. Two layers of 180g Powernet fabric compress from chest to abdomen. A more convenient full-length chest zipper, instead of 3-row hook eye closure, ensures easy on and off wear each time when you wear it. Easy to zip up. Big X-shaped under shoulder tightens back for a lean appearance and slim waist on both sides. The material produces higher compression resulting in more sweating and helps your body to sweat out harmful fats. Enhances the abdominal and spinal support.