CottonImportedKing Size Pillowcase (20 x 40 Inch) Only.100% Cotton ?C Hypoallergenic, Long Staple Yarns Woven in a Sateen Weave Make These Pillowcases Incredibly Soft and Luxurious.400 Thread Count – Perfect for maximum comfort and durability. Higher thread count does not mean better quality or comfort.Details Matter – 4 Hems pipepin add beauty. Oversized pillowcase keeps pillow out of view. Double stitching adds durability. Fine cotton adds breathability and softness. These cannot be sold cheaper without sacrificing on the quality.Care instructions – Machine wash in Cold Water , Do Not Bleach , Tumble Dry Low If Needed.