Abstract: An in-vehicle removable viscoelastic bedding device includes (a) a mattress formed of viscoelastic foam, and having a rectangular top view footprint with a predetermined width at its widest point, and a predetermined length at its longest point, and having a left area cut-in and a right area cut-in, each of the cut-ins having a cut-in width equal to at least 12% of the predetermined width of the mattress, and each of the cut-ins having a cut-in length equal to at least twice the cut-in width; and, (b) a-protective cover containing the mattress, and having a shape, thickness, width and length sufficient to encompass the mattress. In some embodiments, the left cut-in and right cut-in are mirror images of one another. In other embodiments, the device is made wherein one of the left cut-in and the right cut-in is longer than the other, e.g. to accommodate a spare tire well or other protrusion.