High Quality Material: Made of high-quality rubber material with rubber grooved surface provides an excellent grip, explosion-proof and resistant pressure, resistant to abrasion lightweight and durable. Honeycomb for Non-Slip: The tire is designed with deep non-slip pattern to avoid slipping. You can use our product in wet ground. But still be care of yourself safety. Elasticity：The design of the solid tire has been studied to allow flexibility. The tire can be stretched, but it will always return to its original shape. Its buffer memory allows to recover its shape according to the pressure and the changes of temperature. Its dimpled microspores also allow flexibility on the road. High Resistance: the solid tire has been developed to respond to irregularities in the road, a hard tire shaped and durable over time. Its manufacturing process has been designed to protect against UV. The tires are made from natural rubber to maintain road and polymer flexibility for strength. The solid tire has been developed to respond to uneven road conditions, a durable and durable tire over time.The special rubber material with grooved surface offers excellent grip and wear resistance. Specifications: Type: Scooter Outer Tire Quantity: 4pc Material: Rubber Color: Black Inner Diameter: 15cm/6.1inch Outer Diameter: 24.5cm/9.8inch Package Contents: 4 x outer tire 4 x inner tire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.