The SWAP_Xchange: start(s) the change! project was born from a shared conviction among Brisa Intercultural Italia APS, SEQ (Slovak Eco Quality, Slovakia) and UniGrowth Development Center (Armenia) that young people have both the potential and the responsibility to be active protagonists in the transition towards more sustainable models of production and consumption. The fashion and textile sector is one of the main contributors to global environmental impact: according to the European Parliament, 87% of discarded textiles in Europe are incinerated or sent to landfill, yet it remains largely absent from non-formal education pathways aimed at young people. Starting from this gap identified by all three partners during the ideation phase, the project was structured around five specific and interconnected objectives: 1) increasing awareness of the urgency of a green and sustainable Europe; 2) developing green competences and environmental activism skills through NFE methodologies and Youthpass; 3) promoting eco-conscious behaviours through the clothing SWAP format open to local communities; 4) strengthening EU-EECA international cooperation by amplifying the voice of Armenian young people in European youth dialogues; 5) and creating dialogue platforms between young people and policy-makers, with the culminating moment being the international hackathon in Armenia. The project aligned with the Youth Goals of the 2018 EU Youth Dialogue, in particular Goal #10 (Sustainable Green Europe), while also contributing to Goals #8, #1 and #9. A key strength was the interconnected nature of the objectives: awareness provided the cognitive foundation for competence development, the competences acquired made it possible to adopt eco-conscious behaviours, and these behaviours found collective expression in the international dimension and in dialogue with institutions. The choice to focus specifically on sustainable fashion, rather than generic environmental themes, made the project concrete and close to the daily lives of young participants, for whom fashion is often a primary form of identity and cultural expression.