The marine Cintra Flex A type fenders are highly resistant as they can stand a strong a constant force, without suffering any scratch. The A type fenders provide security in case of a load excess, the reaction force does not increase under an excess of load, this avoids the fender to get rigid and damage the vessel. Total security, due to the way it is made, with several layers or rubber between 10 to 22 mm of thickness, united with scrapt fabric adhered with hot Flux, which guarantees maximum resistance to the pressure exerted by the vessels.