This thesis comes to persuasive speech on Design products. Products with Brazilian identity, which formerly were destined for export and consumption of tourists, have become objects of domestic consumption, desirable goods of mass culture. It was important to guide this study to investigate what is national identity, and how the design is absorbing this national identity. There is an inherent rhetoric in the design of products that show the brazilian identity as persuasion factor, making them objects of desire. The presence of icons of our national identity and our city as a representation of brazilian identity has been acting as a persuasive element that induces consumption of Design. The theoretical framework of the research were based on the New Rhetoric of Chaim Perelman and Lucie Olbrechts-Tyteca, the General Theory of Signs by Charles Sanders Peirce and Gestalt principles treated by João Gomes Filho as transdisciplinary support to analyze the objects. The object of study adopted was the work of Gilson Martins, which uses national identity elements as argument to sell their products. Aiming to reflect on the rhetorical effects in product design and configure the benchmarks assumptions in the work of Gilson Martins, a visual analysis of objects that show Rio de Janeiro icons, the colors of the national identity and, in some cases, adopt the national flag to persuade the public consumer. It was possible to prove that the contemporary design of Gilson Martins brought to the objects with images of national identity added value. The artist products are valued by a social group that values design objects and are willing to pay more for quality products and identity.