The Go Go roller has strong wheels. steel shafts, and pedals that can handle the rough treatment of children while remaining unharmed. With no sharp edges, the Go Go will not pinch or hurt the children's feet. The Go Go Bus allows 2 or 3 children to use it at once. The children have to move together to make the bus work. The coordination makes the bus a fun and challenging activity. The wheels and pedals are plastic with steel reinforcements and a steel axle.