Latex Charm. From Myers comes this fabulous Latex Charm, a twin spring mattress with dual response open coil springs providing double the comfort. It has a layer of Dunlopillo Talalay latex giving instant pressure relief and a new comfort extra mattress layer for a soft sumptuous feel. The Latex Charm is an easy-care, single sided mattress suitable for any bed frame - plus it's hypo-allergenic properties make it ideal for allergy sufferers. So buy this Latex Charm Now £375.00.