I bought three for my kids. They LOVE them.  This is the second set of three I have bought.  They don't last forever, especially if they get used hard.  Certain surfaces wear the wheels down more.  (Concrete, I think is not the best surface.)  Mostly they ride them on a large deck.  But for the price they are worth it.  Hours of fun.  Great for balance.  My four year old zips around on this and thinks it is so fun.