Sleep cool and wake up refreshed with the TruCool Hybrid Bed Pillow Featuring Serene Foam. This hybrid pillow features a Serene foam core surrounded by a fiber-filled cover, providing optimal comfort and support. The removable cool-to-the-touch cover offers greater airflow for a soothing experience. Ideal for all sleeping positions. Cover is antimicrobial treated. Serene foam is CertiPUR-US certified. TruCool and Serene are registered trademarks of Carpenter Co.; Supportive Air Technology and IsoFresh are trademarks of Carpenter Co.; CertiPUR-US is a registered certification mark of Alliance for Flexible Polyurethane Foam, Inc. Trucool