I purchased zip'r 4 scooter online. It was way too small for my mother that is 5'11" tall. It is made for very short and small people only. There is a seat assy. That moves forwards and rearward 4", but that costs $250. Why wouldn't that seat come standard with scooter, so taller people could use scooter. Just another way to get more money from consumer. Also scooter arrived broken. They had to send me a whole new rear section for me to replace and return bad section to them. I just wanted my money back, but they told me the scooter is considered "medical equipment". Which is not returnable. The whole experience was, Undeserved Problems!! I am very upset with this company and will never use again! Just be careful .