● 3 zones spinal-protecting system conforms to the comfort demand . This design ensures that couples can enjoy undisturbed slumber, while also offering a personalized and comfortable sleep experience tailored to diverse preferences.● Knit with OEKO-TEX certified ,soft and breathable style suits every seasons.● Premium foam in quilting plays a role of sound insulation,sound absorption and shock absorption.● PU latex foam structure contains tiny pores, which allow for moderate air circulation and reduce the stuffiness in a closed environment.