Style: Cool Black Yellow frame with wheel rims and handlebar grips; It's all about fun, creativity, freedom, and friends. The dinosaur-looking is perfect for the next cycling star! Easy to Adjust: The seat post has a quick release clamp that makes adjusting the seat height quick and easy so the bike can comfortably fit your child as they grow Sizing:12" bike for 2-4 years (33"-41") toddler, 14" bike for 3-5 years (35" - 47") child, 16" bike for 4-7 years (41" - 53") boys.Note: child height may vary even at the same age, please take the height into consideration. Safety First:this Dinosaur bike includes reliable coaster brakes & handbrake for smooth, secure stops, and removable training wheels to help your child build confidence as they learn to ride. Easy assembly: The bike comes 85% pre-assembled, with an elaborated instruction manual and all tools needed in the box. It is easy enough to put together in 15 minutes