New offer. Pillow covers are now available individually. Order what you need now as you need it. Our Summer pillow covers are of great quality, polyester, 18x18in. to fit most throw pillows that you already have. Easy zipper to change covers from one season to the other. Leave on all season regardless of what holiday may happen in that season. Check out my fireplace video on Facebook showing our fall decor and demonstration of how easy it is to switch seasons with our covers.