Duo Certified Organic Rubber Latex Mattress Duo The OrganicPedic® Duo mattress is fully customizable so each sleeper can tailor the feel of the mattress to his or her personal preference. Start with one of our tried-and-true configurations or select the premium GOLS-certified organic natural rubber layers that feel the best to you. The three layers are individually encased in GOTS-certified organic cotton sleeves that prolong the life of the mattress, and are labeled with their firmness to make it simple to change your mattress around. Just unzip our signature OrganicPedic quilted cover, make your changes, and zip it back up. The sculpted surface of the top layer provides the ultimate in comfort and pressure-point relief. Constructed of certified organic materials in our Eco-Factory, this certified organic mattress is sure to give you years of great sleep.