This is a medium firm memory foam mattress which combines a deep 50mm layer of memory foam with 150mm of Reflex foam. All of the foam in this mattress is manufactured in the UK & is of the highest quality. The memory foam acts to reduce contact pressure points between the mattress & the sleeper & therefore helps reduce joint & muscle pain. It also provides a luxurious sleeping surface. The Reflex foam is castellated to allow air to flow through the mattress & regulate the sleeping temperature. This mattress comes with a 5 year guarantee. 20cm thick Medium firm feel Memory foam pressure relief Castellated foam for enhanced air Flow Vacuum packed for easy delivery Removable washable cover 5 year guarantee Next day delivery