[Design for Beginner Riders - The JOYSTAR 20 inch BMX bikes is a great first BMX bike for young riders that offers everything a beginning rider needs to hit the streets! Suggested rider height is 4\0" - 4\8". Durable Frame - The hi-tensile frame is made from strong Hi-Ten steel to give riders reliable support and long-lasting comfort and This bmx kids bike is perfect for the street park or trails with 19.9" top tube length. Easy to Ride - The single speed drivetrain features 165 mm one-piece crank with a 36T chainring. Rear Caliper brake and Hand-brake levers provide precision speed control. Reliable Wheelset - The wheelset features 20" x 2.125" tires mounted on carbon steel single wall 36H rims with 3/8" female axle front hub and 18T cog sealed bearing cassette rear hub. "Assemble and Warranty - 85% of the 20 inch bike is assembled and comes with assembly tools. Its backed by a limited life time warranty."]