We really like these dining chair cushions, which we ordered in Navy. Our new kitchen chairs are white and the cushions look great.  They fit perfect on our 17.5"W x 19.25"D seats.  I searched a long time for the right color and right fit - not an easy task.  They are comfortable and the ties fit securely so far.   I do wish they came in "two's" also.  I wanted two more for our counter stools.  I would definitely recommend these to a friend.