The Costway 16-Inch Kids Bike is designed for children ages 4 to 7 and features a safe dual brake system, including a handbrake and a rear coaster brake. This versatile bike can be used with or without the removable training wheels, which have a triangular structure for enhanced stability. The adjustable seat height ranges from 22.5 to 25 inches, allowing it to accommodate kids of different ages and heights. With a high carbon steel frame, anti-slip rubber tires, and convenient quick-release lever for seat adjustment, this bike prioritizes safety and comfort. It comes 95% pre-assembled with all necessary tools, and includes reflectors and a bell for added fun and security.