A pillow protector encases a pillow to protect it, keep it hygienic and to extend its life .
Pillow protectors are removable and washable and could be of 100% cotton or poly-cotton or of a fabric lined with polyurethane to make it waterproof.
Waterproof pillow protectors keep the pillow safe from saliva and spills or accidents which would be difficult to clean once they seep into the pillow. They protect from dust mites, mold, bed bugs and other allergens making them essential for people who suffer from allergies.
They could be zipped or with a flap.