Welcome to our store！</br> 1、1. Improves posture: Tighten your muscles and support your back, stay away from the hump. Give you a healthy posture, straight back and healthy look again! Improve confidence! 2、2. Comfortable and breathable material: The Posture Corrector is made with breathable, strong, and high-quality materials£¬for long-lasting back support. So that you can wear it under your coat. It takes only 1-2 hours to wear every day to have a straight back. 3、3. Highly adjustable: High-quality structure gives you more perfect support. You can choose which size you want for yourself! S size is 24"-30", M size is 30"-35",L size is 35"-39",XL size is 39"-45", XXL size is 45"-50". 4、4. Four times support &amp; Ergonomics: This back posterior brace can effectively relieve back discomfort, and it is also good for the waist and neck, More effective support can promote body muscle memory£¬more straight. 5、5. Easy to wear &amp; Use: Just need to wear according to the tutorial: First, put the shoulder straps through the buckle, adjust the positions of the straps. Second, put it on the shoulder like a backpack, one shoulder and the other. Third, pull the shoulder straps to adjust until correct posture. Fourth, enjoy your right posture. Material: Neoprene Colour: Black Size: S, M, L, XL Function: correct hunchback, improve sitting posture 1 * Back Correction Belt Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>