1. Product material: aluminum alloy + plastic + silicone 2. Foldable design, easy to storage and carry 3. 360 degree rotatable chassis, change direction quickly 4. Correct office sitting posture and reduce neck fatigue 5. The height can be adjusted at will, and the multi-angle switching is convenient and practical. 6. All-alloy structure, stable and not shaking 7. Suitable for 13-15.6 inch laptop 8. Folded size: 28.5x24x6cm 9. Expanded size: 28.5x24x30cm 10. Net weight: 820g