The Nemo Pillowtop is a one-inch thick open cell foam cover than makes your sleeping pad more comfortable. The pillowtop comes in 20" and 25" widths and can fit over any Regular Size (20" x 72") and Large (25" x 72") sleeping pad. The Pillowtop has a stretchy bottom and soft top with a 0.75" thick piece of foam on the inside. The best attributes of the Nemo Pillowtop are its low weight and relatively small packed size. These make it better suited to mobile use. You could carry it into a remote base camp and relax in luxurious comfort.
Most people, however, will primarily use a Pillowtop for car camping. And when car camping, comfort is king. Thus, we prefer the Therm-a-Rest DreamTime Comfort Cover, which is both more comfortable and more durable.