Aligns your spine into a perfect position, a natural and comfortable way to better posture. Stand straighter, sit and walk straighter immediately. It helps relieve that back, shoulder and neck pain caused by poor posture. You can wear it at work, at home, in the car or anywhere you want. Fully adjustable. Aligns your spine into a perfect position. T helps relieve that back, shoulder and neck pain caused by poor posture. You can wear it at work, at home, in the car or anywhere you want. Fully adjustable. A natural and comfortable way to better posture. Fits waist size 23 to 37 inches. General information: Size H25, W22.5, D7cm. Manufacturers 2 year guarantee.