Every Serta hotel mattress features an advanced and exclusive Serta innerspring support system designed to promote proper body alignment and support, and Australian-made foams for a consistently comfortable sleep. Features: Fire Retardant Damask Top Panel & Borders FR BS7177 Climatex Top Quilt Panel using High Loft Fibre & Dunlop DreamFoam® Australian made Premium Grade Marathon® Medium Foam Comfort Layer Comfort Edge encased Spring Unit – Premium Grade Australian made Foam