Aguante is a marketplace concept for football shirt collectors, created to solve a common problem: the lack of a dedicated, trustworthy platform to buy and sell collectible shirts. The project was developed through market research, surveys with collectors, competitor analysis, and UX methods such as card sorting, user flows, and journey mapping. The result is a mobile-first experience focused on trust, discovery, and community. Key features include buyer and seller subscriptions, exclusive access to rare items, interest alerts, and seller verification. The project is currently in a validation phase, starting with a waitlist and a high-fidelity prototype.