Features:1. Correct wrong back and shoulder posture. Prevent hunchback.2. Provide back and shoulder support.which will help prevent impacts and bending of the spine and correct bad posture to maintain proper sitting, standing and walking postures.3. The 3D integrated design provides a uniform force to the clavicle shoulder to hold it in place.4. Breathable fabric: Selected breathable fabric, not sultry four season available.5. Hook and loop closure, adjustable shoulder strap, easy to put on and take off.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement.Specification:Type: Posture CorrectorMaterial: 22% spandex, 78% cottonColor: blackAppicable age: children, adultSize:Suitable weightXS:20-25kgS:25-30kgM:30-40kgL:40-49kgXL:47.5-58kg2XL:59-69kg3XL:70-75kg