Allergens can affect the quality of your sleep. These covers allow patients who suffer from allergies to enjoy the full benefits of Chiroflow Waterbase pillows. Bacteria and other microscopic particles can provide a breeding ground for mites and other allergens. The certified Sanitized© finish on these protectors will protect pillows even after many washings. * Every patient who buys any pillow needs this protection. * 20Óx28Ó fits Standard, Queen or Jumbo pillows. * 240 Count, 100% Cotton for breathable comfort * Deluxe zipper closure. Machine wash, tumble dry.