Ergonomic design: The ergonomic pillow, maintains the natural curve of the neck, with cervical contour to properly hold the neck. The central cavity of the neck support pillow holds the head and ensures an optimal posture. Wedge extension helps sustain the thoracic column and special support of orthopedic pillows hold the arms. The upper part of the pillow with 2 horns to properly align your neck with the rest of your body because this side provides better head support and cervical vertebrae. All other people who sleep on their backs or side can sleep at the bottom. For those who sleep on the side, the central hollow design will release the pressure of the ear and keep the pass .