The combination of "Visco-elastic" technology and the versatility of a traditional open coil spring unit the Contour Master ensures a luxurious and calming sleep system at an extremely affordable price. With the Visco-elastic or(Memory Foam) having it's product roots in NASA it has increased in demand dramatically over the past year. Specification Visco-ellastic technology ,Stretch soft touch Belgian damask cover , No-turn mattress only requires rotating 180 degrees, Resists harbouring dust mites, Flag stitched handles and breather vents, Twin-wheel castors.