This report presents general findings from research funded through the Australian Government, Department of Foreign Affairs and Trade (DFAT), including its innovationXchange. It represents collaboration between DFAT’s Pacific Division and DFAT’s innovationXchange following an internal DFAT Ideas Challenge. The study was undertaken in 2016-17 and focuses on menstruation and how it is managed by women and adolescent girls in Solomon Islands (SI), Fiji and Papua New Guinea (PNG). The purpose of the study was to explore the challenges experienced by women and girls in managing their menstruation, and whether these challenges make it hard for them to equally participate in school and work and engage with their communities.