1. Apply to 3-year-old up to 180cm adult, non-sectional adjust knob
2. Adjustable height: 33~56 +/-2 cm.
3. Adjustable height can meet comfortable posture according to user's need.
4. Seat cushion can sliding and adjust from 0~6.5cm.
5. Reduce stress on the back. Spine is protected and supported by backrest.
6. Improve blood circulation which the leg and ground becomes 90°not getting sore when long-time sitting.
7. Gravity at back underneath makes the chair more stable.
8. Brand new designation, easily to move by back bone handle.
9. U.S.A. BIFMA weight loading certificate & fire-resistant.
10. Patent approved.
1. Seat sliding: 0~6.5extend.
2. Seat: w43cm x d41cm.
3. Back: w36 x d36cm.
4. Color patent: grey boat patent.