DO NOT BUY THIS CHAIR - DANGEROUS!  I had read another review about the instability of this chair and I should have listened.  It was just by chance that I happened to remove this chair from my dad's assisted living apartment when I noticed one of the legs was not sitting properly on the floor.  On closer inspection I saw that the caster screw was bent and on another leg the wood had split.  My dad only weighs 144 lbs and this chair should have able to support his weight easily.  I also noticed that a number of the screws had loosened.  Luckily, I caught these issues before something bad happened.