I was extremely happy we could special order a specific size of cushion with a great variety of fabrics, especially Sunbrella fabrics.  When our order arrived the dimensions were perfect BUT the overall quality of the cushion 'felt' like it was from a discount store with a very low price point.  The stuffing was of very low density; when I sat on the cushion on my thicker wicker chair, I almost felt like I was sitting on nothing!  This issue could be rectified with a much denser filling and I also suggest a thicker cushion overall (at least 3-4 inches).