All sofa beds can be used with the same duvets, duvet covers and pillowcases you’d use on any other bed. However, when it comes to the bottom sheet, it’s worth checking the size and shape of your sofa bed to find a suitable fit. This could mean choosing between a top sheet (flat, without elastic), or a traditional fitted sheet (with elastic corners). The Model 04 is the size of a standard UK double bed which makes this easy.