BONNELL SPRING, NATURAL LATEX & SPINAL ZONE PATENTED MATTRESS Taking into consideration your value for comfort. We have designed the most comfortable mattress you could ever want. Vienna uses 7-Zoned Natural latex in a Euro-Top construction, and in combination with Spinal Zone patented technology. It is the ideal choice for anyone with back & neck issues. The specially treated 3D fabric is anti-allergy and dust mite resistant for the highest sleep hygiene. Vienna is an unmatched sleeping surface that provides additional support to the torso. Vienna supports your spine – and you!