I find the matrix Advance Medium Back ideal for working from home. Comfortable throughout my long days everyday. Don't need the arms as bad for posture. Lasted several years and when the foam wore out went and bought the same model.

I bought the chair 2 years ago and find it is comforting. However, I find the height of the chair is a bit low. It was raised to a maximum height, but when I sat on it, it went down a few centimeters, when I stood up, it would go back to the original height. Not sure if this is by design or is faulty.

Having a similar Matrix chair at the office, what could go wrong with this one? Very uncomfortable, definitely not for 8 hours plus, perhaps 2 at a push. Unfortunately, I am unable to return it because I threw the packaging away. :( Wish I could exchange it for a more expensive chair.