1. Natural latex pillow core: Latex has good elasticity and rapid rebound. It can maintain the natural curvature of the neck when sleeping on the side, provide continuous support, and has good breathability. It is suitable for side sleepers who have high requirements for comfort and durability.
2. Buckwheat husk pillow core: The buckwheat husk particles can move freely according to the shape of the head and neck. It has moderate hardness and excellent breathability. It can provide uniform support when sleeping on the side and prevent the cervical spine from sinking.
3. Memory foam (slow - rebound sponge) pillow core: Memory foam can self - adjust its shape according to the pressure of the head, fit the curve of the neck, and reduce the sense of oppression when sleeping on the side. It is suitable for users who need a soft wrapping feeling.
4. Polymer fiber pillow core: The fiber material is light and has moderate elasticity. It can provide sufficient support and maintain good breathability when sleeping on the side. It is suitable for side sleepers who are sensitive to weight.
1. Back sleep (lying flat)
Medium hardness: The pillow core should maintain moderate support, keeping the head slightly higher than the shoulders, helping the cervical spine maintain its natural curve, and avoiding the neck sinking due to being too soft or the neck leaning forward due to being too hard.
Recommended materials: Memory foam or latex, as they can provide a certain degree of softness while maintaining support, which meets the needs of back sleepers.
2. Side sleep
Slightly hard or medium - hard: The pillow core needs to provide sufficient support to fill the distance between the shoulder width and the head, keeping the cervical spine and the spine on the same horizontal line and preventing the cervical spine from bending when sleeping on the side.
Recommended materials: Buckwheat husk, fiber or polymer materials. Such pillow cores have moderate hardness and good support, which can keep the neck stable when sleeping on the side.
3. Stomach sleep (lying on the stomach)
Medium - soft: The pillow core should not be too hard to avoid excessive pressure on the neck. At the same time, it should not be too soft to cause the head to sink and affect breathing. A medium - soft pillow core can slightly lift the head and reduce the burden on the cervical spine.
Recommended materials: Down or soft memory foam, as they have high softness and can provide slight support when lying on the stomach, meeting the comfort needs of stomach sleepers.