The Flexcell 500 Quilted from Breasley is made using a base layer of reflex foam which is 150mm deep finished with a top 50mm layer of memory foam. The mattress is available in non quilted as well as quilted please call for more details on non quilted. The total depth of both mattresses is 200mm. The memory foam density in this mattress is 55kg/m which is a high quality memory foam.