The eREST® mattress is simply the most luxurious mattress available. It offers the most comfort and flexibility of any mattress out there. And, since health is just as important as comfort, eREST® is also the most natural, non-toxic mattress available. With three 3” layers of 100% Natural Latex for an Oeko-Tex certified manufacturer, the eREST® mattress has absolutely no chemicals, petroleum or fire retardants in it. The Organic Mattress Cover is made out of 100% Organic Cotton and Eco-Wool, and also has no chemical fire retardants! It is clean, healthy and comfortable... luxurious in every respect.