My little girl graduated from a kid Razor to this. The first one was defective, but the replacement was perfect (size-wise) and it rides well. The wheel bearings roll smoothly and the larger wheels give a more comfortable ride. As noted in other reviews, I ended up taking off the kickstand because it caused clearance issues when going over larger bumps or up and down driveway ramps (between sidewalk and street). The kickstand is mounted under the unit and the standing platform is long. There's already not that much clearance underneath so as you go over a bump (front wheel on one side of the bump, rear still on the other), the kickstand catches and can cause you to loose control. Once I took it off, it was much better. It seems sturdy, but depending on user, it does take some muscle to slide the handle up to fold / unfold the unit. Because it can fold up for carrying, I wouldn't be too aggressive on the ride because the spring loaded pins that keep it folded or unfolded are the weak points.