I ride with my 4yr old grandson Caden at least once a week. He is such a trip. We bought him a 16" Hotwheels theme bmx, the kind with the throttle on the right handgrip and tachometer w/noise effects. He revs it up with his little legs just hammering on the pedals laughing all the way down the sidewalk. I just coast along on my racer grinning and laughing.