COMFORT: Very soft, Very Firm support 100% EDprinQFlex pocket spring* suspension offering independent sleeping, natural ventilation and durable support spread across 7 comfort zones. It is made from thermo-stabilised steel for optimal resistance, coupled with a steel perimeter belt for further stability. The sleep side comprises Xltojfoam, wool and padding for a very soft feeling and absolute comfort. fabric on the underside and on each of the 4 edges for micro aeration and self-ventilation of the mattress without turning it. It is covered in 31 Og/sqm of stretch fabric for a truly soft touch For guaranteed comfort, we recommend Tops bedbases from the Thiriez Literie collection guarantee to 7 years) * 260/sqm pring and Hot 15 [that increases FIRMNESS SCALE