This book develops feminist theory and methodology to offer an innovative socioeconomic perspective on the everyday experiences of managing menstrual blood and menstruating at work, based on empirical research conducted in Australia and the UK on the menstrual cup and the menstrual workplace policy. The core argument of the book is that while contemporary menstrual innovations are often aligned with neoliberal capitalist values of individualism and efficiency, they also demonstrate a challenge to these same values in radical ways, away from profit-driven enclosure of the female body and towards a 'menstrual commons'. Menstrual innovations therefore offer information about how we might reshape-or be already in the process of reshaping-current norms of commodification, capitalization, and embodiment more broadly.