Each cushion is 17.5". Three colour choices; Grey, Eggplant, Teal. Buy more, save more! When you buy 2, you save $4! When you buy 3, you save $6!! Make your selection(s) from the drop down menu. If you are buying 2 cushions, select "2 cushions" (select "3 cushions" if you are buying 3) from the drop down menu and then specify your colour choices in the notes section during the checkout process.