S (suitable for 30 Catties - to About 80 Catties) M (suitable for 81 Catties - to About 120Catties) L (suitable for 120 Catties - to About 140 Catties) Features: 1. Correct your posture and restore a healthier height to your body. 2. Reduces back pain, widens and sinks. 3. Contribute to growing development. 4. Health Products for men and women bodybuilding, for daily office clothes. 5. Fully adjustable, comfortable and easy to carry. Functions: It helps to withstand, relieve and relieve pain. It helps improve breathing, relax muscles and straighten the neck, spine and head. 2. Help pull your shoulders back to stay tall and sit straight. 3. It can be worn discreetly under clothing. 4. suitable for adults or children Package Included: Back correction belt*1