The Eastern King Organic CocoSupport Mattress is built with the highest quality organic materials and are all tested to last a lifetime to create your 100% Toxic Free Mattress. Thanks to the constant reflex of its 4 inch 100% Organic Dunlop Latex core and the durable support Coconut Coir provides, you will find that the CocoSupport Mattress acts as a highly durable mattress that provides optimal pressure relief.