Since these are new chairs its hard to review the unused product.  I gave them a 2 star on the construction.  There are 16 screws, per chair, to screw into a  piece of paper thin wood that holds the chair cushion to the metal support.  I purchased 8 chairs, 128 screws. and NOT ONE actually took a tight hold.  Extremely disappointed hoping our patients don't fall to the floor after we use them for a few months.