My grandkids (4,6,8) saw kids riding this at the local park and wanted them for Christmas. I looked at them on Revain and thought they weren't a good design. They opened them for Christmas and they love them. They are brought in all the time. I couldn't believe how fast, agile and uphill they were. Easy to assemble, adjustable in size. They are very light and easily fit on the back of the RAV. I wonder how long the wheels will last before replacing them, but I'll take care of that if necessary. They have scratches on the front pipe from a driveway fall, but they don't care. The most important thing is that they love them and play with them every day. The brake is also a good thing. A 4-year-old can give his brothers a good race. Good exercise too. They also look very comfortable.