The Duplo is suitable for children from 2 years to up to 7 years. A great toy, actually one of the best. Some parents stumble on plastic look. But no matter. You can do so much with it! They have limited level. Duplo is a real train set is not just merely a crude (Lego) replacement. Here the advantages: locomotives and wagons are very robust. They are made of Lego Duplo parts stuck together (in the box). The "engine block" the locomotive comes prefabricated. He is also very durable. If the trains are not actively played, they come by themselves to a standstill. Turn one more turn and then stop. Thus, the battery consumption is very low. Keep loose several months. The robustness of the trains also extends to the rest. Small children's hands can very well deal with it. Once the tracks are not connected so closely together - does not matter! Everything works just as well. Minor glitches in Gleisverbau stuck trains just go away. You drive over it and continue. The tracks are indestructible. When little feet traipse over it, breaks nothing. And finally head is also required: Not so easy to get the degree of curvature of the track guide so every time out that the rail loop or Achterloop also closes. It is recommended that additional rails and switches still specially to buy them. This increases the variety. The present case is a circle or a small roller goes out. But you would like more. This building set further includes still barriers, a crane, a conveyor belt and several other components - all this makes a lot of joy. Conclusion: A great toy that stays long interesting. Kids love the Duplo tracks. Because they really can use it to do everything alone and not - fail because of the difficult parts of plug - as in more complex model railways and car racetracks. A word about the Lego systems: Warning! "Duplo-Bahn" is not compatible with "Lego Ville" train system!