Traintastic action is just a tap away with the T.A.G. (Touch And Go) touch-activated Chuggers! You are the train conductor! When you tap on their roof, these 3.75-inch scale trains start their engines and are wheels to the rails until you give them another tap to bring them to a stop. Each T.A.G. train is compatible with all Chuggington track sets, as well as most other train track systems! Brewster, the diesel-electric engine, is super strong and super dependable – a trainee like no other! Alongside his fellow trainees Wilson and Koko, Brewster is learning to ride the rails of Chuggington and is always ready and eager to lend a helping hand!T.A.G. Chuggers are designed for kids ages 3 and up. Each train requires 2x AAA batteries, not included.