My pocketbook has moths coming out of it, so cost was a factor in this buy.  I have an outdoor chair that I purchased over 10 years ago that has weathered VERY well.  It was from a line called Beaufort, if I remember correctly.  I have yet to find anything that is "one piece" that is going to fit the chair, as the back is longer than the seating area.  So, I got a wild idea when I saw these, the price, and the fact that they had green and purchased 2 of them.  There is a little difference in the length and the height between the chair and these, but I could tie them where and how I wanted them and they worked like a charm!!  I am very happy with them.  Their depth of 4 inches is good, too.  If you are having issues finding something for YOUR happy spot, think about using 2 cushions instead of 1.