We bought this for my 4 year old daughters birthday. Relatively easy to put together, however, more than a year down the line, she still struggles with it. The mud guards rub against the tires and when the front brake is put on, it stays touching the tire. We have taken it to Halfords to see if we are doing something wrong, but they are saying it's simply a problem with the bike. She still manages to ride around on it, but it's like she's going up a slight incline everywhere. Now looking to buy a younger sibling a bike and will avoid this one. Wish i had returned it sooner, but delayed as i thought it was just a fussy child.