1、CORRECT WRONG POSTURE: Eases tension from sitting at office before the computer all day by aining muscles to support proper posture. Brace gently corrects cervical and thoracic conditions for proper spinal alignment. Provides proper support at home, at 2、FULL BACK & ERGONOMICS DESIGN: The posture corrector support your full back, shoulders and waist. The saps pull your shoulders back while our waist band supports the middle and lower back. Helping to reduce the load on the spine and muscles 3、ADJUSTABLE SIZE AVAILABLE: There're 3 kinds of sizes to choose according to your special waist size. As for the detailed size information, please refer to the picture. If there has a size problem, please feel free to contact us 4、EASY AND COMFORTABLE: Made with breathable and soft neoprene. Wear it 2 hours a day, you will see a charming and confident posture after several months. It can be worn when watching TV, work on computer and learning, but except sleeping and exercising 5、SERVICE GUARANTEE: Please feel free to contact us if you meet any issue about size, support and quality. We will provide a refund or replacement service to you Product name: Back support Humpback correction belt L sizeFeatures:1. Double Y cross saps are ergonomic, open the shoulders and correct the hunchback;2. Memory fiberboard, song support for the waist, relieve fatigue;3. The shoulder-wrap design forms a protective net from point to surface, which fits the shoulder curve and is comfortable to wear;4. Breathable mesh fabric, light and breathable, not stuffy and sweaty; Product suitable waist circumference: 90-105cm;Product suitable height: 160-180cm;Suitable weight for the product: 60-75kg;Product Features:1. Correct bad posture;2. Improve the distance between eyes;3. Relieve body fatigue;Steps for usage:1. Setch out your arms, bring a good back and adjust the shoulder saps to a suitable position;2. Pull down and flatten, adjust the position of the abdomen and waist, and glue the abdomen hairy hook;3. Setch the end of the double Y cross sap to the abdomen, adjust the tension properly and bond;4. After wearing, saighten your shoulders;