Abstract: A removable mattress cover assembly includes a removable mattress cover that attaches to an upright wall assembly. The upright wall assembly includes an upright wall that attaches to a top of a mattress base and one or more wall fasteners attached at or near the top of the upright wall. The removable mattress cover includes cover fasteners that mate with respective wall fasteners to attach the cover to the upright wall. When the cover fasteners are attached to the wall fasteners, the removable mattress cover lays over the top of the mattress base, and the upright wall is nearly perpendicular to the removable mattress cover. This allows a fill material that is nearly the same size as the top of the mattress to be inserted beneath the removable mattress cover. The fasteners can project upwardly, away from the top of the mattress base, making the fasteners easily accessible from above.