"The most advanced pillow cooling technology available, Omniphase® phase change material provides continual temperature regulation with ventilation for superior airflow. Phase change molecules capture and release heat as needed to maintain the optimum sleep temperature throughout the night. To further the cooling properties, activated carbon infused in the foam creates a pathway to filter heat away from the head, face, and neck. The unique shoulder cutout is designed specifically for side sleepers to align the head and neck, and the supportive memory foam relieves pressure points. Lastly, a Tencel™ cover creates a soft, smooth surface that helps control humidity while allowing maximum exposure to the Omniphase® coating.