Rubber Material】: Crafted from rubber, these kids bike tires offer good self-sealing properties, making them sturdy and resistant to wear. They are easy to install and maintain their shape well due to their elasticity. Design】: The kids bike replacement tire surface features deepened patterns that significantly improve grip, ensuring stable rides even on wet roads. This anti-slip design enhances stability for your child during rainy conditions. Wider Shock Absorption for Comfort】: The widened tire structure enhances shock absorption, allowing for a smoother ride over uneven surfaces. This feature ensures a more comfortable and secure riding experience for children. Efficient Water Drainage and Turning】: Equipped with large drainage grooves, the bicycle tire provides good water expulsion capabilities and strong cornering control, enhancing stability during rides. Easy Installation】: The bike outer tire is designed for straightforward installation and replacement, saving time and effort while increasing efficiency in tire maintenance. Specification: Diameter 30 cm / 11.81 inch Package Includes: 1 bike outer tire Note: Please allow slight errors due to manual measurement and different monitors.