This Mountain bike has been our son's main ride for the past 2 or 3 years but sadly he's outgrown it. It has 20 inch wheels and works well from 6-9 years. Bought used in very good condition and it is still in very good condition. It has never spent a night outside since we've had it so everything shines up pretty nice and there is no rust on any of the chrome parts. This is a 6 speed with a grip shift that works perfectly. Has some minor scratches and wear just where you would expect from normal use but this bike needs nothing. Oh and the plastic ring on the front chain ring is partly broken (I lied! It does need something) but I think it is more for keeping your kids pants from getting caught in the chain then any other more important purpose. Didn't seem to be an issue for us.