I was nervous for size, our son having a good template. To give an idea, almost 3 years it measures just over 1m and the saddle of the balance bike is still at the lowest level, which seems to suit him perfectly.
In conclusion:
For the child, it is very light, perfectly handy, easy to learn, has a simple but nice look, it's tough.
For parents, it is easy to carry due to its compact size, it occupies the child long hours ... and she really cheap cost compared to competing.
Really do not hesitate!
From 2 years - 2.5 years for children large and 2.5 years - three years for the other I think.