our daughter has this got 12 inches Puky 3 years u. 9 months. she is 102cm tall u. it fits her perfectly in terms of size. the 16-inch puky would have been just great for them (it tried in the bike shop, they did not tidy their feet down). because it will use the little sister in 1 year already on and then with just 3 runs with it, there was for us, therefore, no discussion about a possible different model - and the decision was good.
my daughter was already super Puky learner bike go by what you learn when cycling very good came. The first meters were still shaky with parental keep the rack -. After 15 minutes she had the hang of it and rushes already unaided (and of course without any pillars that we immediately removed).