3It's Bear's special day Hop on board the Birthday Bus with Bear and friends as they travel in style This bus-shaped board book features thick board and colorful illustrations created to entertain and engage little readers. Clever's Wonder Wheels series introduce toddlers to popular vehicles in a grab-able, hold-able format Birthday Bus is the perfect size for toddlers to tote with them wherever they go. And the perfect shape to zoom around their favorite play space while developing fine motor skills and vocabulary.