These were too small but we sent them back and expect the new ones today (maybe tomorrow). My son loves Heelys so we expect this new larger pair to be perfect for him when his current ones no longer fit.  It took him a day or two to learn how to HEEL around. His brother never liked it or learned it but if they want to try for a while, they'll get the handle of it and love it. He uses them outside as well as inside so these old wheels got rusty and had to be removed and WD40 helped restore their spin. I think if they are only used indoors, this should not be a problem.  ____ The new ones arrived but they were too narrow. We sent them back again.