The quality of the chair/materials is very good to excellent. However I give it only two stars as it is uncomfortable to say the least. The "headrest" hits the shoulder area nowhere near the neck or head. (I am not tall only 5'11") Also the seat leans back all the way at the slightest movement and doesn't seem to be adjustable to prevent it.
Over all a good chair with good ventilation. But Head rest broke with in 2 days. The screw area simply came off. I don’t think this is an issue with screws being tightened which I didn’t. The material is so brittle