This article explores the main features of the "sustainability of life" approach, a theoretical and political approach specifically developed in the context of Spanish, Latin American, and Caribbean feminist economics in the last two decades. It dialogues with decolonial feminisms; ecofeminisms and degrowth ecological proposals; the popular, social, and solidarity economy; and feminist reflections on "good living" and "good co-existence." The article situates this approach within the wider spectrum of feminist economics as a plural school of thought and examines its particular characteristics in greater detail. Specifically, the article highlights sustainability of life as a multilevel approach that connects economic, social, and ecological systems and reveals the capital-life conflict that runs through them; offers a non-Eurocentric and intersectional perspective for analyzing the diverse implications of this conflict; and presents a political positioning that draws emancipatory imaginaries and horizons that place life at the center.