A cover assembly for a mattress is provided that includes a first cover and a second cover. The first cover includes a top panel, a bottom panel, and a continuous side panel collectively defining a cavity for enclosing the mattress. The second cover includes a top surface and a bottom surface, with the second cover being positioned over and dimensionally-sized to cover at least the top panel of the first cover. A fastener then connects the second cover to the first cover along the perimeter of the second cover. Methods for marking a mattress are also provided that include the step of marking an indicia indicative of a characteristic of a mattress on the top surface of the second cover of the cover assembly.