The Cassius Super Kingsize Mattress offers superior comfort, support and pressure relief for a deeper and more restful sleep. Featuring a deep foam base with 7 zones of memory foam offering additional support where it is most needed. Airflow chambers and airflow borders allow greater breathability, and the Coolmax cover draws moisture away from the body to help regulate body temperature. Hypoallergenic. Non-turn, just rotate periodically. Made in the UK. Mattress firmness: Medium/Firm.