The mattresses are made of foamed foam non-deformable, are made to measure both for the thickness and for the different densities, so as to ensure maximum adaptability according to the weight of each person; the mattress lining padding can be requested: pure cotton (summer side) and pure wool (winter side); the cover is in cotton and silver yarn to obtain an antibacterial, antistatic and anti-stress mattress, or in "Air" from the particular alveolar structure that allows maximum perspiration and ventilation inside the fabric itself.