A pillow protector is a protective cover designed to encase a pillow, safeguarding it from dust, allergens, and spills. Made from various materials, such as cotton or polyester, these protectors can help extend the life of your pillow by preventing wear and tear. In addition to protecting against stains and dirt, a pillow protector can also enhance comfort. Many are designed to be breathable and soft, ensuring a good night's sleep while providing an extra layer of hygiene. They are often machine washable, making them easy to maintain and keep clean.