- Breathable, Thermally Conductive back cushion design.
- Zipper bag attach lockable, detachable key chain.
- Safety waist band strengthen function of vertebra protection.
- Wristband with lock can fix book bag position.
- Durable, smooth zipper.
- Streamline shoulder strap design.
- Inside EVA board add the loading design: EVA is designed by vertebra shape.
- Outside design: anti-luminous (for safety)
- Spacious room for books and stationery; buckle can fix book.