WECE Funny Dinosaur T-Rex Pillowcase - Kids or Baby Zippered Pillowcase, Cute Dinosaur Pillow Protector, Best Kids Baby Pillow Cover - Standard Size 20x30 inches, Twin-sided Print 50 percent of cotton, 50 of polyester, Twin sides print WITHOUT pillow core. Funny Dinosaur T Rex Kids or Baby Zippered Pillowcase Pillow Protector