Gemma is new way to construct mattresses, a revolutionary technology that combines the use of Fully Certified Human and Ecologically Safe Materials with the maximization of Thermal Comfort and Ergonomics. Gemma Firm Mattress features a gem-like (pentagon-dodecahedron) multilayer foam construction, inspired by nature, that allow for constant airflow inside the mattress, maximizing Thermal Comfort and body alignment with a pleasant sense of pressure-relief. Maximum elimination of moisture, thanks to its gem-like foam originally designed for outdoor use. Constant air circulation thanks to a 2nd stage in the manufacturing process in which each of the cells that make up the foam are re-structured into a gem-like shape. 20 year warranty.