Adjustable handlebar and seat make it ideal for kids of different ages and heights. Designed with dual brake methods: hand brake and coaster brake. Quick release lever to adjust or fix the seat height. Anti-puncture multi-layered tires can be divided into rubber outer buffer layer cord ply inner tube and protective layer. 2 detachable training wheels for added safety and steadiness. 2 using methods: with training wheels or without training wheels. Safe reflectors keep kids visible in low-light conditions. Astm/ Cpsia compliant for safe and reliable use. Non-slip pedals and comfortable seat for effortless and enjoyable riding. Pre-assembled design and detailed user manual for quick assembly. Robust metal frame for excellent strength and sturdiness. Bike bell provides kids with added fun. Equipped with a kickstand to park (Only for 18-inch BIkes). WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. See www.P65Warnings.ca.gov.