Early Engineers Percy is a larger engine, made just for small hands. A junior member of the principal team of engines, this little chap is normally quite happy puffing around the yard. Percy's always keen to oblige, a fact of which the other engines are apt to take advantage. The Early Engineers line offers young train lovers their first stop in wooden train play. Chunky vehicles, sturdy tracktiles, and simple destinations are just right for little hands. And, since Early Engineers are compatible with Thomas Wooden Railway products, the journey continues as your toddler grows. Although compatible, Early Engineers engines may not fit under all Wooden Railway bridges, tunnels and destinations. Thomas Wooden Railway Early Engineers vehicles, track and destinations are not compatible with Take Along Thomas items. Made of real wood Measures approx. 2.5L x 2.25H Ages 18 mths