House Manufactured ComfortBonnell Spring Unit with Border Rod gives maximum Support while not compromising on ComfortAirbond & Wool Upholstery Layers .80mm of the new Airbond Mattress filling, gives a Medium feel with optimal Back Support, breathable for a comfortable nights sleep.  10mm Wool Layer for a Healty Sleeping Environment.Deep Tufted Soft Knit Cover.Deep Tufted Mattress for optimum support and to prevent upholstery movement, the Mattress if finished in a beautiful Soft-Knit Fabric.NO-TURN MODEL