The BIO mattress is equipped with a Memory Foam comfort layer that creates an individual print- a shape that will perfectly hug your body during your sleep; also having a hard felt layer on its ‘summer’ side. The balance between the comfort grade layers helps maximize relaxation and is oriented on the correct support of the spine during sleep in perfect alignment. The high porosity and permeability of the outer Knitted fabric favors much more intense air circulation, thus facilitating the removal of moisture.