The King Koil Elevate Tight Top Firm Mattress is designed for sleepers who prefer a stable, supportive feel with just the right touch of comfort. A breathable super-stretch TENCEL™ fiber cover promotes airflow and moisture control, while cooling Flexara™ memory foam helps regulate temperature and relieve pressure. An individually encased coil system delivers targeted support, minimizes motion transfer, and provides lasting durability, so you sleep comfortably, night after night.