Adjustable handlebar & seat for kids of different heights. Quick release lever for easy adjustment and tight fixation. Fully enclosed chain guard for a safe riding experience. Designed with a safe dual brake system: handbrake and rear coaster brake. 2 removable training wheels help kids learn to ride and keep balance. Heavy-duty high carbon steel frame for long-term use. Anti-slip handlebars and pedals for extra safety. Shock-absorbing and anti-puncture wheels for steady riding. Astm compliant and Cpsia approved for reliable security. Suitable for lawns cement floors boardwalks asphalt roads and more. Fun riding gift for kids aged 3 to 4/ 3 to 5/ 4 to 7/ 4 to 8. Why choose our bike？Great for body building balance ability and self confidence. Tools are included for easy installationInstallation guide. 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.