Adjustable seat and handlebar to suit kids of different heights. Quick release lever for easy adjustment and tight fixation. Fully enclosed chain guard for safe riding. Designed with a safe dual brake system: handbrake and rear coaster brake. Ideal riding choice for 3-4/3-5/-4-7/4-8 years old kids. Front & rear reflectors and wheel reflector ensure easier visibility to others. 2 removable training wheels help kids learn to ride and keep balance. Sturdy metal frame and wear-resistant wheels for long-term use. Anti-slip handlebars and pedals for extra safety. Fun bell & anti-slip grip for more convenience. Astm/ Cpsia compliant for reliable security. Ideal for cement floors boardwalks asphalt roads and more. Great for kid's building strength improving balance and developing self confidence. Kickstand allows your kids to ride more courageously (only available for 18-inch bikes). Pre-assembled design for hassle-free assembly. 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.