Absolutely a perfect for those hard-to fit king-sized pillows that don't fit in traditional pillowcases. The king is exactly 20" x 40". The cotton material washes up with no pilling, shrinking, or distorting. Love that the company does not use chemicals in making these cases, especially since a pillowcase is meant to be so close to one's face. They are not exactly "soft" feeling...have a bit of a firm texture that is still nice to the touch and comfortable.