Children Anti-hunchback Sitting Writing Corrector(Pink M Shaped)

1. Material: ABS+stainless steel 2. Applicable age: 3 years old and above 3. 7-degree scientific angle, ergonomic design, easy to maintain correct sitting posture 4. Scientific distance protects eyesight. The eyes are one foot away from the book. When using, the eyes and the table form an angle of 15 degrees. 5. Adjustable height 16-25 cm, suitable for children of different heights 6. Detachable design, no need to install the clamp table for fixation 7. Silicone anti-slip design makes clamping more stable and does not damage the desktop 8. Threaded knob, comfortable to hold 9. 180-degree full viewing angle, no blocking of sight, free writing 10. Size: crossbar 25.5cm, adjustable height 16-25cm 11. Clampable thickness: 5 cm ?