This is a functional pillow core that can be used all year round and provides suitable temperature for the head.

• The A-side is a white temperature-sensing surface with an outer layer of natural cotton fiber and an inner layer filled with energy-efficient heating fibers using nano-heating powder material. It continuously collects external heat to form a thermal insulation layer, slowly dissipating heat and keeping warm and comfortable for a long time;
• The B-side is a blue honeycomb structured fabric with a cooling factor attached to the surface, and the cooling coefficient reaches 0.25. It has real thermal conductivity and heat dissipation functions, providing a cool and comfortable feeling in summer;
• The middle layer is filled with anti-bacterial fibers using the DACRON FRESH series of anti-bacterial and high-elastic fibers, with an effective antibacterial rate of over 99%;
• The three layers of filling can be switched according to different needs, and quickly bounce back after pressing, providing stable support for the head and neck;
• The wrapped edge design makes the pillow core more rounded and full in shape, making the neck more comfortable;
• The pillow core has passed the cosmetic-grade antibacterial safety test and can be safely used even for sensitive skin.