Build big railway adventures with an all-new Harold made just for little engineers! why chuff around town when you can fly to the rescue with Harold! made just for the youngest Thomas fans, bring your favorite helicopter to life when you use the big blocks, spinning the helicopter blades and keep a watchful eye on the Island of Sodor and prepare to fly to the rescue of anyone in trouble! bring Harold together with other buildable Thomas characters for even more friendly fun on the railway! ideal for ages 1 to 5.