● 5 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%. ● Functional fabric contains silver fiber, antibacterial, anti-static, avoiding odor generation, washable.● Gel memory foam perfectly sticks with human body curve. Gel particle is not sensitive to the temperature that make you feel cool in summer and comfort in winter.● With 2cm graphene foam in comfort layer supply stability, conductivity, thermal conductivity  to ensure you are comfortable all night long