● 3 zones spinal-protecting system conforms to the comfort demand . According to the human body mechanics,head part creates 10% of body force at sleeping posture,back-hip with 75%.and legs with 15%. ● 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.● Decorative Euro-top makes the design newly, and adds its value.