● 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%. ● Functional fabric contains Tencel fiber,focus on wrinkle resistant,heat resistant, and strong moisture absorption.● 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 3cm Bamboo charcoal foam offers excellent moisture absorption,antibacterial and odor prevention