Great cushions!  I searched endlessly because I wanted high quality, and a cushion that was thicker and would not sag.  I bought the grey ones and we've been using them now daily and no noticeable sagging.  We do store them in a waterproof box at the end of the day to ensure they last. My only wish is that the made the white sewn on tag more readily removable because there is no way to cut it off completely so there is a little white seam but I flip the cushion and its fine.  I would HIGHLY recommend these cushions!