Keraflex® EL balcony and terrace tiles are made of natural and synthetic rubber (EPDM). They are uniquely pleasant to walk on. The tiles are as soft as a forest floor, each step sinking in slightly. You can go barefoot on Keraflex® EL and relax. The material is pleasently warm. The panels are water permeable so that the surface dries quick after a downpour. The wear layer is slip-resistant.