READ THIS! ! ! !  Overall the chair looked nice but after less than four months of part-time use the swivel posts on all of the casters of our two chairs wore out causing the casters to become wobbly - losing all of their bearings.  The chairs rolled poorly and eventually the posts started to break.  During the death throes of the chair, the bearings and metal bits dropped grease all over our office floor.  Be careful - every style of chair with this type of 5-arm base and ball casters will likely have this same issue.