Opal. Exclusive to Mattressman, a luxury pocket sprung mattress with a thick memory foam layer and a pillow top with a Tencel cover. What makes this mattress special is the order of the fillings; the pillow top is filled with man made fibres to reduce the often uncomfortable heat that memory foam is known for giving off. Tencel is a unique fabric with 50% greater moisture absorbancy than cotton and natural breathability to help prolong the life of your mattress. And buy this Opal Was £799.00 Now £779.00.