The core of the pillow is made of memory foam material, and different density and color foam options can be provided according to customer needs to meet diverse market needs and make your product line more competitive. The pillow core is designed with ventilation holes to improve the overall breathability and ensure that users can stay cool and dry while sleeping. The pillow is made of open-hole memory foam, which provides resilience and support, better fits the curve of the head and neck, and relieves pressure. The layered design can easily adjust the height of the pillow, and it can be freely customized according to different sleep needs, so that every user can find the better height for themselves.