A comforter is a type of bedding that provides warmth and insulation. It is typically filled with materials like down feathers, synthetic fibers, or cotton, and is designed to be used on top of sheets. Comforters come in various sizes, including twin, full, queen, and king, to fit different bed dimensions. Comforters often feature decorative covers, which can be made from various fabrics such as cotton or polyester. They are available in numerous colors and patterns, allowing individuals to match their bedroom decor. Many comforters are also machine washable, making them easy to maintain and care for.