A duvet cover is a protective and decorative covering for a duvet, which is a type of soft, fluffy blanket filled with materials like down or synthetic fibers. The duvet cover serves to keep the duvet clean and can be easily removed for washing. It typically features a closure, such as buttons or a zipper, to secure the duvet inside. Duvet covers come in various sizes, colors, and patterns, allowing individuals to personalize their bedding. They are often made from materials like cotton, linen, or polyester, providing comfort and style to a bedroom. Using a duvet cover can also extend the life of the duvet by protecting it from dust and spills.