JSYOUDF The custom Pure cotton Personalized Fashionable The Little Mermaid Cosmic Cartoon Home Decorative Square Zippered Throw Pillowcases Unique Pillow Sham. 18"x18 " pillowcase.(one sides) Made of cotton linen cloth material Size20x30 Inches High quality hidden zipper on one side The pattern is only on the front side An invisible zipper on the side, very easy and convient for you to clean.