Neoprene rubber Mat is a black colored rubber that is used in applications where moderate levels of oil, petroleum, ozone, and weathering-resistance are needed. Neoprene elastomers are very popular due to the broad range of applications in which they can be used. Variations in this elastomer exist in the forms of solid sheet, open cell and closed cell neoprene. Each type is suited for specific applications, but they retain mostly identical chemical resistance qualities. This synthetic elastomer was the answer to society’s need for an alternative to natural rubber that could fare better against chemicals and outdoor elements.