The luxurious breasley uno pocket 1000 mattress is made up of 1000 foam encased pocket springs with a 50mm top layer of high density foam and a high density support foam baseindividual pocket springs work independently to provide support and even pressure distribution as you sleep the springs are encased in high density foam giving edge to edge support and maximising the sleeping surfacea generous top layer of quality high density foam complements the pocket springs and provides excellent su