Personally I have bought this bike for my daughter's 1 year. She was especially delighted even addicted to the good loud music! But unfortunately in September after an almost daily use of tar only the wheels have lost the rubber around the bike making it unusable. Given the price I have not hesitated to contact so Feber that it proceeds to the wheel changes because it was too late in relation to the time limits for appealing has Amazon. Feber m after having responded relatively quickly set a long time am sending spare wheels (j had been accused that the delays would be long). J have well received new wheels without surcharge per cons no explanation for climbing because when we receive the bike the first time the train is back fully assembled. J have therefore request a leaflet was Feber who sent me very quickly by mail against impossible to do if you are not a handyman minimum because you have to break the system and then turn us except that we send only the wheels so you have to mess with it that may be. My daughter can again use his bike but I do not think for a very long time because the problem of al air wheels again. We'll see al use. In any case it'd be to do again I would spend my way even if a perfect service but considering the price of the product a little trouble swallowed the wheels is not a strong minimum ...