It is heavy wood. Like that it goes from small round to larger for extra space. Putting together was easy , except trying to line up undersude of top with base to attach screws. Really need a second person to help for just a min. I supported one side on a desk and the other side in the back of a chairso I could get underneath it to attach screws just well enough to stand it up, open expandable top and tighten screws with provided wrench. My chairs are some I had and are wider then you'd usually use with this table, so it's tighter around it than most people would have.