Abstract: All four corners of a single rectangular piece of quilted material are notched to form a mattress shield blank. The blank has a rectangular center portion substantially the same size as the top of the mattress to be covered, two side portions substantially the same size as the sides of the mattress and two end portions which are larger than the ends of the mattress. Each of the side and end portions are folded downwardly to form the sides and ends of the mattress shield and each pair of abutting side and end portions are secured together to form four vertical corners. The end flaps or the remaining parts of the end portions are then folded inwardly so as to be parallel to the top portion. These flaps are adapted to cover a portion of the bottom of the mattress and are secured to the side portions adjacent the edges of the flaps. In a second embodiment, the side portions are also provided with flaps which are secured at their edges to the edges of the end flaps.