got three of these for a home office.  Some reviewers talked about the wheels losing ball bearings, I wish I had not purchased for that reason because one of my chairs has also been shedding these balls every once and while.  Well today the whole wheel fell off and I actually came on the website to see what my options were.  there is only a 30 day return policy so that's not an option and the protection plan was $35 which I think is way too expensive.  I will definitely think twice about what I buy here and definitely take the reviews under stronger consideration.  Aside from this issue, the chair is pretty comfortable and the color is consistent with the pictures.