Uses: Improves rounded shoulders and forward head posture, and supports the maintenance of correct posture. Features: Easy to wear like a backpack. A back bone is built into the back to support the entire back. Support strength can be adjusted by pulling the adjustment straps. Breathable mesh material is used. Recommended for those who are concerned about their posture during long hours of desk work, smartphone use, reading, etc. Size: The item in the image is size M. Brand new, unused. Management Number: 116-$$580