We adopt proprietary mix of memory foam and microfiber which has almost zero pressure on the head and cervical spine. Fell very comfortable. The blood circulation of the head and neck is good Provide ergonomic support without stressing points to avoid numbness fatigue and soreness of limbs and it is conducive to deep sleepCover is 60% Polyester 40% Rayon Derived from BambooWith the ability of automatic shaping the sleeping posture is more natural conducive to health and avoid vertebral deformation Deformation of the spine can cause many diseases If some middle-aged and old friends have deformed vertebrae it can be used to correct side / back / stomach so that you are in a natural positionYou can add or remove fillers and adjust them to the size you think is most appropriateAccording to the survey, 4% of the people are not suitable for the taste of memory cotton. Because the taste of German sealed pillows will increase in the process of logistics transportation, but this odor does not harm the body. You do not need to worry about if this situation suggests ventilation for 3-5 days, the taste can dissipate.