JSYOUDF The custom Pure cotton New Arrivals Narwhal s Aquarelle Play Banjo Personalized Soft Cushion Case Invisible Zippered Plush Pillowcover New. 18"x18 " pillowcase.(two sides) Made of cotton linen cloth material Size18x18 Inches High quality hidden zipper on one side Patterns are two sides An invisible zipper on the side, very easy and convient for you to clean.