Ultra Fresh Brand Treated Pillow Protectors-Our 4 Pack King 100% Cotton pillow protector cover encasement are made with 100% breathable cotton and made with worlds famous brand of Ultra FreshOur Cotton Pillow Cases are best pillow covers, since they are treated with Ultra Fresh , they perform best in pillows protection.Cotton Zippered Pillow Case Protectors: Our White Pillow cases are make with goods quality zipper which is the easy, way to control itching,sneezing, itchy throat, stuffy nose and it help ease asthma and other symptoms so you can get a good night??s sleep.Breathable Cotton Fabric: Our pillow encasements are made in all sizes Standard 20 x 26, Jumbo / Queen 20 x 30, King 20 x 36 with cotton fabric to create soft. Pillow case protectors come in 2 pack and 4 pack style standard pillow case covers .WASHABLE EASY CARE Our pillow protectors are of best quality. Machine Washable and tumble dry low, no ironing required. We manufactured our product with extreme care and welcome any suggestions but if you do not like the product you can do with our hassle free return procedure.