1. Material: ABS plastic 2. When not in use, it can be rotated to the side to avoid accidental bumps. 3. S-shaped curve design, closer to the seat, stable and non-swaying 4. The telescopic hook is lubricated and burr-free, effectively preventing children from bumping into it, and providing safety protection without hurting people. 5. Bearing 10KG, strong and durable 6. Semi-opening design, no need to disassemble the headrest, easy to install 7. Weight: 22 grams 8. Size: 11x4x4.5cm