Wheels and handles are plastic.  The handle feels a bit flimsy.  It doesn’t wheel over a curb, and the handle isn’t strong enough to allow you to put weight on it to lift the front over a curb.  You have to go and physically  lift the front up onto the curb then go back to push it along.  Have had it a few days and I used  it a couple of times.  Rides steady on pavement. Will be checking out how it fairs on light gravel.  I’d rate the quality as so so.