The best organic mattresses come from brands like Avocado, Nolah, Birch and Naturepedic and tend to be latex innerspring hybrid mattresses ... mattress is also resistant to mould and bacteria.
The Stearns & Foster Estate is a luxury hybrid mattress ... Eucalyptus Mattress Protector claims to be breathable, hypoallergenic, as well as sweat, dirt and spill resistant.