We bought this for our small ten year old. . . she's about 65 pounds and one of the smaller ones in her class (that means I don't know her height. :) ). Anyways, she loves it and I think I do, too.It did arrive as expected but did arrive with some scuff marks on the plastic. I'm not sure this will buff out or not; we didn't try. The "light" in the front is decorative only and doesn't work, as I expected. We didn't care about the scuff marks and I doubt my daughter even noticed them at all. There's a hand brake but, to get the bike to work, you ACTIVELY have to twist the left handlebar. . . if you let it go, the bike's motor will stop. .. so, in fact, it's very easy to stop and go.Also there's a center kick stand that was easy to teach my daughter how to use.There's storage area under the seat which is a plus.It arrived charged and with the wheels inflated so, after 20 minutes of assembly (which really means putting the front wheel and handlebars on), she was off and riding for almost an hour. It was still going strong but we plugged it in at that point to charge.Here's why I really recommend it, though. We had a razor "motorbike" style scooter for my son when he was about the same age. Razor MX350 Dirt Rocket Electric Motocross Bike He's outgrown it and it's sitting in our garage still. Well, our daughter really wanted to ride it but I would have had to replace YET ANOTHER battery for it to get it going again. That scooter had no overcharge protection and had a more complicated charging process. We had to replace the battery a few times during the year or two when my son was riding it. . . and batteries cost about fifty dollars, but I think I may have found a site where I only paid thirty-five. Still, inevitably we'd let the bike charge and forget about it and the battery would QUICKLY die. . . I don't mean after a few charges more, I mean the MOMENT we overcharged it, it just wouldn't work anymore. EVER.Anyways, although I'll update if this turns out differently, this newer model has overcharge protection AND a charger with a light that turns from red to green when fully charged. So, this purchase was worth it to me for this reason. Supposedly, the battery lasts for about 250 charges, too.It seems to go about 15 mph as stated and our neighborhood is really very hilly. . . she zipped right up the big hill immediately with no lag. She's only 65 pounds and I'm not sure if it would take me up the hill, but I was able to ride it fairly comfortably around the big circle we live on and it was comfortable enough (though really small).It states it's for riders ages 12 and up-- I think most 12 year olds would be too big for this since most of them are nearly adult size. This comfortably fits a pre-teen child.