A comforter is usually a thick bedding topper, most often made of cotton blends and synthetics. It is probably the most popular type of bedding topper in the US. It is sewn or quilted to keep the filling in place, but usually in plain, non-ornate patterns. A bedspread is a light-weight single-layer topper that covers the whole bed, sometimes down to the floor. They are good for cooler weather and sometimes come with elaborate finishes like pompom or chenille. Duvet covers are made to fit over a comforter with a zipper or buttons that can easily be removed for cleaning. You can switch out how heavy of a comforter you use on the inside to adjust to different temperatures throughout the year. Lastly, a quilt is an artistically crafted, heavy blanket with a top, inner batting, and bottom layer stitched together with complex patterns. They are popular for coastal, country, or rustic decorating styles.