I have severe back problems to match my severely large buns, so I did MAJOR research while looking for a chair that would offer both back support and support for my weight. I FINALLY went with this one because it said it could support up to 400 to 450 lbs. Now, I'm not that heavy, but I figured the more weight it supports the better. So, it arrives today and the box says it only supports to 350. I come on here, and it says to 250 . So...which is it??? I am not taking a chance on a chair with no idea of the weight support on it, particularly since it was 180 bucks! The web site people need to get their acts together!