"Flexible toy which can grow with your children…"
We first got DS1 some train set for his second birthday. We would build a track, and he would push a train around. As time went on, he would build the track, and DS2 took on train pushing duties. As the children have grown, they have been given additional pieces extending the possibilities. DS1 now builds complex tracks with multiple different routes. It has been one of their most played with toys.