This is a nice and very sturdy 4-wheeled bike that I got for my grandchildren to ride while visiting. It's made of strong metal. I expect the cushioned seat or plastic wheels to wear before the frame, although the seat is a tough material too, while providing enough cushion. The wheels are a hard plastic. We love the neutral green color and overall look of the bike.
It was very easy to put together with a few exceptions. On the 3rd step in diagram 2, it was hard to start screwing it in because the screw was small and it goes in a small space. Once I got it started, I was able to easily tighten it with the tool provided. Also, there were 2 parts labeled P3 - one longer and one shorter. When putting it together, you'll need the longer one in the first step, and the shorter in the next step.
The bike I received seems new, but there is evidence that it was returned by another customer. Some pieces were already assembled (and had to be pried apart) and there were handwritten notes.
At the current list price of $70, this is a good value - it will easily outlast your toddler!