This is a very high quality and durable waist trainer. I ordered a size medium and it is perfect. I made sure to check all of the information including the size charts when deciding which one to get. Ive heard great things about waist training and believe it may help me with not only my posture, but also my bloated belly and back pain. It is my first waist trainer and am exciting to start this journey. I would recommend this one to anyone!