There is nothing more personal than the choice of one’s pillow, and exactly for this reason, production companies of bed systems offer a wide range of pillows.
The pillow must fill the space between the head and shoulders, must correctly support the nape aligning the head with the vertebral column, and must meet personal needs of softness: it is therefore essential to test it first hand in a store before buying it.
Always keep in mind that the perception of the same model of pillow can change depending on how the mattress “adapts” to the shoulder area.