Back Pain Relief Corrective Posture The posture correctors are readily available and can help to correct your body's alignment and strengthen the muscles of your upper back, help the sedentary office worker correct the sitting posture for lumbar disease prevention, help relief the Thoracic Kyphosis Shoulder Neck pain. Chest Size Ranging from 28 to 55 The velcro straps allow you to adjust the tension and positioning of the brace, it is available in medium and large sizes, fitting chests ranging from 28 inches to 55 inches, measure your chest and buy our posture corrector by confidence. Light Weight & Comfortable Hanmery posture back brace belt made of breathable close-fitting fabric, lightweight and comfortable to wear when your spine is in its neutral position, fits flush across your back and the padded straps wrap under your arms without restricting movement,of cause,tighten it may uncomfortable at first time,you need to adjust it to find a comfortable posture.It's comfortable to wear when your posture is on point, but becomes uncomfortable if you lose proper form. Wear Adjust by yourself The corrector adjusts in the front, making it easier to put it on and take off by yourself, adjust the tension and fit, fully adjustable for women man, maybe some people find it beneficial to have a helping hand when adjusting it for the first time. Our man women posture Corrector is a modified figure-eight design with a wider span of material between the shoulder blades that better distributes pressure,the ergonomic design molds comfortable on your body,can be worn over or under your clothes. 28 to 55Adjustable for chest circumferences.