A bed clothing assembly for a mattress including a mattress band and a unitary sheet assembly that is removably attachable to the mattress band for attaching and changing bedding. The mattress band encircles the sidewall of the mattress, and includes upper and lower edge portions that extending inwardly and continuously around the peripheral edges of the top and bottom surfaces of the mattress, respectively, when the mattress band is installed on the mattress. The unitary sheet assembly includes a bottom sheet and top sheet connected together as one unit. A plurality of fasteners around the bottom sheet permit the detachable securment of the bottom sheet to the mattress band to facilitate placing the unitary sheet assembly on the mattress. This particular construction and arrangement is advantageous to a person that is physically disabled and permits easy changing of bedding without having to lift the mattress.