*1. Vertebrae correction, effective against hunchback.
*2. Pure physical correction principle, using the stability of the rectangle and uniformity of force to apply force on the entire reference of the back, stretching the curved bone to reproduce the normal physiological curve of the spine.
*3. Do not hurt the spine keel support, fit the back curve and wear it easily to shape the body without pressure.
*4. Invisible inside wearing comfortable and breathable, three-dimensional shape easy to wear comfortable and breathable and more comfortable.