The Viscofoam 250 is a good quality memory foam mattress with a firm feel. The mattress is based on a foundation of high density reflex foam which creates the firm orthopaedic feel & gives excellent body support. On top of the reflex foam is 25mm of temperature sensitive memory foam which effectively reduces contact pressure points between the body & the mattress, therefore improving circulation. The mattress cover is removable for cleaning. Mattress is 20cm deep 25mm of temperature sensitive memory foam Reduces tossing & turning 5 year guarantee Vacuum packet for easy delivery Removable cleanable cover Next day delivery