RESIN AND CONCRETE: A PERFECT COMBINATION! The Trevi Fuzion pool combines the durability and stability of both concrete and resin. Years of research and development have yielded a pool that is perfectly adapted to our harsh climate. Made from resin panels filled with concrete, the Trevi Fuzion is a self-supporting modular pool available in multiple sizes and shapes. Furthermore, its unparalleled solidity allows for the installation of a stone paver sidewalk for a unique, stylish look.