I gave this only 4 stars. The cushion complied with the specifications (dimensions) but in my opinion it lacks the cushioning that I expected. The foam for the cushion does not appear to hold its shape, is compressed flat, and has an irregular shape that seems to have taken  a set. If I had to do it over again I might have gone with a 3 inch cushion. It does not help that the cushion is now at a significantly lower price than I paid. 
PS I placed it on a teak wood bench that I also purchased from Wayfair, which is a superior product.