Is it better to buy a middle pillow or a high pillow for Jieliya pillow?

Jieliya middle pillow is a very traditional pillow. Its advantages are moderate hardness and good air permeability. It is not hot in summer and not cold in winter. The pillow in the middle is suitable for most people lying on their backs.

Pillows are fillers used by people for comfortable sleep; Modern medical research believes that the human spine is a straight line from the front, but a curve with four physiological bends from the side.