【posture corrector】The back corrector is specifically designed for hunchback caused by incorrect posture,US Patent Number: D948061S ,This upper back brace is particularly suitable for people with a slight hunch, those looking down, and those who work long hours. You can wear this lazy shoulder strap all day and feel very comfortable! | 【Fully Adjustable】We have designed a unisex posture corrector for both women and men, which helps improve posture, reduce back pain, promote better spinal alignment, and reduce posture related health issues, making your back more straight | 【 Innovative Design 】 The back posture corrector uses a cross guide strap to correct the back posture in the most comfortable way. The size range is M waist (28.34-33.46in), L waist (33.07-37.79in), XL waist (37.40-41.73in), XXL waist (41.33-46.45in). You can easily put on and remove the posture corrector yourself without any help. Before placing an order, please refer to our size chart to choose the appropriate size. It is recommended to take a larger size between the two sizes. Don't hesitate when choosing a back brace or posture corrector to achieve a more comfortable fit. | 【Invisible Breathability】 Wearing posture correctors for men and women is as simple wearing clothes. Whether you are at home, in the office, or traveling, can easily use our correctors. They simple, comfortable, ensure breathability. You adjust size of back bracket according to your body shape, may feel uncomfortable a short period time because bad posture. After using them few times, will get used them, We suggest that wear it 10-20 minutes on first add 10 support every day | 【Perfect Gift Idea】 Craft a Gift for Your Loved Ones Who Are Experiencing Discomfort, a Gift That Aids in Correcting Their Posture. Sitting Up Straight Is Incredibly Beneficial, Promoting Relaxation and Improved | Attention: If your waist circumference is at the upper limit of the size range, we recommend that you choose a larger size. Please measure your lower chest circumference, not your waist or belly button. Due to manual measurement, please allow for an error of 0.5-1 inch