The Comfort Tech Bed Pillow Featuring Serene Foam is designed with Supportive Air Technology, which increases support while reducing pressure and it also features Active Air Technology for increased airflow. Designed with a removable double-knit cover. Serene foam features IsoFresh odor-neutralizing technology and is CertiPUR-US certified. Serene is a registered trademark of Carpenter Co. Comfort Tech, Supportive Air Technology, Active Air Technology and IsoFresh are trademarks of Carpenter Co. CertiPUR-US is a registered certification mark of Alliance for Flexible Polyurethane Foam, Inc. Features: Removable Cover, CoolingSleeping Position: Back, StomachPillow Size: StandardMeasurements: 18 Length/Inches, 24 Width/InchesFiber Content: 100% PolyesterFilling Content: 100% Viscoelastic Poly-FoamComfort Type: Medium DensityCare: Spot Clean, Machine Washable CoverMaterial: KnitCountry of Origin: Made in US