This is the AR3 (Arrangement Recommendation 3) organic latex mattress review. If you like firm but soft, this may be for you. The two bottom layers of certified organic latex are medium firm giving for most people ultimate support. Then the top three inch layer is medium soft giving the pressure point relief most people will like. And as in all cases, because you are buying a list of materials, an arrangement recommendation of materials, and not buying A MATTRESS, and are building your mattress yourself, you don’t have to have have fire-retardant chemicals in your mattress because the United States Consumer Product Safety Commission only regulated mattresses and mattress producers, not materials YOU make a mattress out of.