A bed protector is a protective covering designed to shield a mattress from spills, stains, and allergens. It acts as a barrier against dust mites, bacteria, and other irritants, promoting a healthier sleeping environment. Bed protectors are typically made from materials like cotton, polyester, or vinyl, and can be easily removed for washing. These protectors come in various sizes to fit different mattress dimensions, including twin, full, queen, and king. Many bed protectors are waterproof, making them ideal for households with children or pets. Using a bed protector can extend the life of a mattress and maintain its cleanliness.