Children's Humpback Back Straightener Sitting Posture Orthotics Band

Product information:
Color: Keel LCD count average size, removable and washable one size, LCD one size, common button (children and adults)
Specifications: English packaging
Product function: spinal correction/stretching and chest expansion/improving hunchback/preventing rickets/protecting eyesight
Battery capacity: 500mAh-USB universal charging interface
Product material: high strength nylon strap/PC PP