Load the numbered cars one by one, roll to the next stop, then lift and extend the articulated wooden arm to unload each vehicle one by one. Six sturdy pieces interact to make this exciting vehicle play set one of a kind: The solid-wood cab is easy to grasp and pleasingly weighty, ensuring a smooth ride for all. Its extendable magnetic arm is an exciting way for children to grab and move the four numbered cars, each with a unique coloration that lends itself to pairing and sorting fun. ('Find all the cars with a yellow stripe/white light/the color blue.') And the detachable trailer features stabilizing tracks that keep the cars in place when the trailer is in motion, or lets them slide back and forth easily when it’s time to rearrange. Designed to engage playful preschoolers and constructed with care to withstand their harshest treatment, this play set is made of durable, child-safe materials and safety tested to our most rigorous standards.