Warning Don't buy, you could get hurt. The large part of the base is made of plastic and wood and glued in the holes of the wood. I was about to assemble the chair and started unwrapping the larger base when a screw fell on the floor, the base had already fallen apart not strong enough to handle the shipment. I just received this chair. The most important thing would be the base working, which comes out of the box broken. Plastic, Plastic, and wood do not glue together well and of course, it will break, I feel that this company knows this chair will soon break. But then they will have their money and it's our problem. I always take out all pieces first and examine them. This is the largest base part that's broken, It broke because the glue did not hold the screw, well enough for it to be shipped. Someone will be getting hurt in one of these chairs.