21. What is the purpose of the blue buttons on the pillow?

Different from the traditional memory foam pillows, a button is added to ZAMATHOME pillows, creating a concave shape in the center of the pillow. This, along with the neck support, perfectly aligns the human head and neck, allowing the sleeper to relax further and achieve more comfortable sleep. Furthermore, the button area features a hollow air chamber structure, enhancing the breathability of the pillow.