[JOYSTAR kids bike is designed specifically for children. The bike features sturdy steel frame kid-friendly design with rear rack and fenders adding more fun for kids riding 20-inch wheels ideal for riders 7-12 years old or 47-61 inches tall adjustable saddle and handlebar allow the bicycle to grow with your kids Training wheels can be easily detached dual spring saddle provide comfortable riding and chain guard in place to safeguard little hands feet and clothing "Equipped with both rear coaster brake and front caliper brake easing the transition to a bigger hand-brake-only bike when theyre ready" Easy to assemble: Arrives partially assembled Assembly tools and simple instructions are included. Our limited Lifetime Warranty covers the bicycles]