Before governments formulate sustainable consumption policies, people's environmental attitudes must be ascertained. This study explores Costa Ricans’ interest in green products, those with a reduced ecological impact. A large sample is used, N = 1,036, representative of the country's adult population. Analyses indicate that consumers that are female, Generation Z, university-educated, and mid-high socio-economically have significantly higher Green Product Involvement/GPI levels. Surprisingly, Millennial and high-class GPI levels were but average. Overall GPI was also low, just 44%. Despite Costa Rica's stellar sustainability reputation, green products are hardly relevant to its people. This hinders the country from being truly sustainable. Counter to some views, bi/multivariate results indicate that demographic variables still play a key role in establishing (un)sustainable consumer profiles. Demographic indicators are simple, convenient, and effective segmentation criteria. They should not be discounted, especially by resource-strapped developing countries. Some preliminary suggestions indicate how Costa Rican consumption might be made more sustainable.