Need to fill an empty square pillow cover or pillowcase? Stuff it with our pure white 18” pillow insert! Made completely out of high quality polyester, our 18 inch pillow insert is silkier & softer than most. Exactly 18x18”, the pillow insert fills every corner & leaves no room when inserted into an 18 inch pillow cover. As an added bonus, our white pillow insert is machine washable. That's right. You can toss it in the washer & tumble dry if need be. It's a great pick for filling a decorative throw pillow, seasonal pillow for holiday decorating, bedroom pillow, chair pillow & more.