The sealy alexander zoned memory pillow top mattress features luxurious fillings including seven zones of soft foam which offer exceptional comfort and so aid a restful nightrsquos sleep the mattress also features a layer of memory foam which moulds quickly to the shape of the body contours and helps to relieve pressure points while giving correct support and natural spinal alignmentthe mattress has more springs at the border of the mattress which provides firmer edge support meaning no