Not very well built at all. I looked at reviews before purchasing and, against my better judgement, I decided to purchase these anyway. I thought these would have been great for my 3 year old son, but these are just not a good skate. The buckles do not stay latched. The size is correct if you are not using shoes, however, you need to have your child in shoes with these or their feet could get pinched. I extended the skate as far as I could and I could barely fit in a basic converse shoe size 10cSee full review