The dunlopillo royal sovereign mattress has an enviable reputation for supreme comfort the mattress has a medium firmness feel and moulds to the body using dunlopillo latex for those who suffer from back discomfort the supportive surface is key to helping with a good nights sleepthe dunlopillo royal sovereign mattress with its dunlopillo latex memory foam layer moulds to your body shape and weight it also instantly reacts to every move as you sleep keeping you fully supported throughout the nigh