We got one for our son for Christmas – he was 18months at the time. He had a go round the house but was not too interested for a few weeks. After a month or so he got more interested, we took him to the park at about 20 months and he saw the older boys on their bikes and was trying to copy them riding off kerbs and trying to do wheelies (hard with no pedals). He’ll be 2 tomorrow and is very good on it now, can go at a speed which has me running to keep up and can do about 3km’s in distance. He doesn’t understand the brake (just jumps off) and I often have to pull him up the hills (I wrap the dog lead round his stem to save my back).
He loves it, when I ask him if he wants to go on his bike he shouts ‘bike, bike’ and goes to get his helmit. 😀
It’s the one toy that he can play with for more that 5 minutes, he’s rubbish at concentrating on inside toys
He eventually gets bored of it and I have to carry it – dog lead helps here too as you can use it to make a shoulder stap to carry the bike. with.