The bolster cushion has many uses. Its tubular shape with round ends is a great head support for something like reading in bed, and a helpful armrest on a banquette. Bolsters also break the visual monotony of traditional cushions.As with round cushions, piping can help create a neat finish. Use a color that is already in the room for your piping. Bolster cushions may or may not have zippers. After the loose filling is inserted, the seam is closed with a slip stitch. If you don't go with a zipper, remember to choose hard-wearing fabric, as spot cleaning will be your only option.