Hiltow Natural Latex Pillow with 100% Ventilated Latex Foam,Breathable Removable Zippered Cover Made from natural latex derived from Thai rubber trees. Ergonomic design Memory curve provided perfect care lining. Thousands of cellular promote blood circulation. Resilient and ventilated. Latex ventilation system and micropores enhance breathability, discourages buildup of moisture and heat in the pillow interior and maintains a pleasant sleeping temperature. Comfortably cradles head, neck and shoulder providing a continuous, luxurious support, thereby relieving neck pain, frozen shoulder, stiff neck and headaches.