● 5 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.● PU latex foam structure contains tiny pores, which allow for moderate air circulation and reduce the stuffiness in a closed environment.● With 4cm comfort foam in comfort layer supply high rebound,good physical stability ,good heat dissipation.