This Pro Thunder bike is with bright moto series racing graphics that stand out. There is a steel diamond frame and rear coaster brakes. It has 41 x 4.5 cm sidewalk tires and wide training wheels which add stability. This bike features an aesthetic that your little boy will be sure to approve of. , , The bike has small, 41cm wheels and comes with a pair of sturdy, removable training wheels, which are intended to assist young riders and ensure maximum safety. Its steel Y-frame and padded seats are designed to perfectly accommodate children and provide them with superior comfort while riding. An exclusive double-guard chain guard prevents dangerous chain interference and wheel jamming for added safety.