My son is 12, growing seemingly an inch a day and rides a lot. Rather than him riding in running shoes I was going to get him some decent shoes to ride in. So I don't want to spend too much on shoes because they can only be used for a while until he grows out of them, but need something grippy and flat soled. I have seen 5:10 make a junior shoe but he may be too big for that. Are there any skate shoes that would be suitable, BMX shoes etc and any recommendations where one could grab them in Sydney? Looking at maybe $100 or so.