They are kind of small.  Comfortable enough.  Seem pretty sturdy.  Swivel is smooth.   They are covered in a very thin fabric, loosely woven, that I expect may not hold up to a lot of use.  It doesn’t even feel like upholstery fabric.  My mistake I guess, because they are not the vinyl  that I thought I was ordering.  I looked at dozens of similar bar chairs and was having trouble finding ones that could be delivered quickly.  Must have not read carefully.  Fabric makes it a little harder to get into and out of the chair as well.  I measured the height to the seat of my old chairs shown above and expected the new ones to be 1.5” higher.  They aren’t.  They are about the same so they kind of hide, don’t make much of a statement.