Do I ever have to turn an Ergo Flex™ memory foam mattress?

Standard sprung mattresses need to be turned to prevent and delay the sagging that occurs through time. Like all memory foam mattresses, Ergo Flex™ memory foam mattresses are manufactured to be laid one side up only, to achieve the body-moulding performance for which they are designed. We recommend rotating your mattress 180 degrees every 3-6 months.