During the last five years, production has increased over the Chilean Peruvian border. However, the ethnographic deepening of the dynamics of this corridor will allow us to delve into its complex cross-border nature, allowing us to discuss theoretical and methodological proposals. This paper addresses the social, eco-nomic and cultural dynamics of the Second-Use Clothing and Footwear Trade Shows on the southern Peruvian border, complementing studies conducted in northern Chile. Finally, the results presented will discuss theoretical assumptions proposed for the Chilean-Peruvian border corridor. In this way, by means of an ethnographic methodology developed based on interview and observation techniques, it is sought to generate evidence of the socio-territorial dynamics manifested in the public sphere of the mentioned fairs. Finally, we will observe that the public sphere itself described allows us to discuss the territorial scales of analysis of the border corridor generating indications to consider a scale that extends to the Peruvian and Bolivian Altiplano.