The sealy pearl latex posturepedic mattress combines a posturetech 660 response spring unit with a latex layer and intelligent fillings and fibres to offer a restful and hypoallergenic sleeping surface the posturetech unit uses a zonal construction to provide a consistent mattress surface from corner to corner and also helps to provide a natural spinal alignment whilst you sleep this level of comfort eliminates tossing and turning during the night thus improving the overall quality of your s