For those who spend sleeping periods with alternating moods, the Star Plus Pillowtop anatomic mattress is the ideal solution: with a constructional emphasis on the surfaces, it offers a dual choice according to your sleeping needs, with a soft side and a tougher one. It consists of Bonnell springs with body-like behavior. Zipper included for easy cleaning, while it's ventilated, which helps keep it warmer than a common mattress.