My grandmother accidentally bought this and stored it at home. Unused. No box. Size Range (Waist Size) S/M: 60-80cm Medieid Style Care Back Stretch guides you to the correct posture and improves stiff bodies. It reduces the burden caused by poor posture such as hunching and rounded shoulders, and supports the maintenance of correct posture. Whether it's on-scene at work or desk work, or off-time relaxing at home. You can easily adjust the support level to suit the scene and your preference. The gentle support will support your posture. [Functionality]: Straps that naturally open the chest. It supports the maintenance of correct posture with a straight back and less burden on the body. [Wearability]: Designed not to constrict the armpits, allowing for long-term wear. It is designed to be unobtrusive even under clothing, reducing bulk. [Comfort]: Soft, thin, and skin-friendly material is used. Mesh fabric is used for the main body (back support parts and anchor) to ensure breathability. [Care]: You can wash it in the washing machine by putting it in a net with the Velcro fasteners fastened.