... and comfortable4.specific style 5.We are manufacturer producing with a good price and quality6.This bike is suitable for 12 ... Chain cover, F&R Mud guardFront & rear plasticSaddleBMX SaddleTyre&TubeGrade A, 12"x1.75 with Butyl rubber W/AVChainwheel&Crank24Tx89mm ,Steel ... , rear box, back rest, and so on OTHER CHOICES: blue boy's bicycle, kids bicycle, children bike