Hit snooze on the Memory Gel Foam Coil Sprung Mattress Available in single, small double, double or king mattresses Cool blue memory foam mattress which contains foam and springs Open coil bonnell spring for longevity Four way stretch fabric for a more comfortable feel  Responsive cool blue memory foam ensures you don't overheat 18cm thick hypo allergenic mattress Medium firmness helps to contour to your body Buying Options:  79.99 pounds instead of 1.0 pounds for the single mattress - save 20% 99.99 pounds instead of 1.0 pounds for the small double mattress - save 33% 119.99 pounds instead of 1.0 pounds for the double mattress - save 33% 129.99 pounds instead of 2.0 pounds for the king mattress - save 35%