Cloud Nine – Principle MonoFlex Mono-Flex Gently firm Turn-Free Posture Support Core Poly-cotton knitted cover High density buoyant Polyurethane foam layers High density reconstituted foam posture support core Zero movement transfer Allergy Free Hygienic and non-toxic Monoflex-Fact-SheetDownloadHome » Products » Furniture » Beds & Mattresses » Cloud Nine Mattresses » Cloud Nine – Principle Range » Cloud Nine – Principle MonoFlex