Dust mites feed off discarded skin cells which can accumulate in a mattress core, while bed bugs are parasites that feed on blood. Standard sprung mattresses have a hollow core, which provide what amounts to a breeding ground for the bugs and mites. Ergoflex memory foam mattresses have a solid core, with layered materials that offer a far-less attractive place for dust mites and other foreign matter. Most importantly, all Ergoflex memory foam mattresses are anti allergenic. This ensures both the mattress and the outer cover are hypo-allergenic and anti-microbial - free of dust mites, allergens and friendly for asthmatics.