The chair was assembled and was put to good use. However, leaning back repeatedly if you're sizeable causes the back to weaken to the point where the chair is not the most functional. Even if under 500 lbs, leaning back should be reserved for those under 300 lbs. If above, you run the risk of adding too much weight on that pressure. The seat itself remains quite strong. But the arms have also weakened to the point where they slide back, as does the back. The cushioning in the seat has also started to show which suggests a weakening of the screws in the seat area.