"Cartier" was created at Latin Music Mondays in Los Angeles, a community event connecting Latin artists through collaboration and shared resources. Nessheads and Celi, two LGBTQ+ Latin artists, wrote the song as a Pride Month anthem celebrating confidence, authenticity, and being unapologetically yourself. Blending Latin urban, reggaeton, and dembow influences, "Cartier" is designed to be a feel-good summer record that empowers listeners to be proud and loud about who they are.