The Period Uniform is the first school uniform to include period underwear. Developed with Colombian intimate care brand Somos Martina, the initiative addresses menstrual health inequality by integrating period care into mandatory school uniforms. In Colombia, uniforms are a symbol of equality. Yet they fail to consider the needs of girls during menstruation. Combined with stigma and limited access to products, this often leads to absence and discomfort at school. The Period Uniform transforms this by making menstrual care part of the system. Schools add period underwear to their supply lists, ensuring access through a familiar and trusted channel. Launched in 2026, the initiative is expanding across schools, supported by educators, NGOs, and policymakers. It contributes to increased attendance, is integrated into the school curriculum, and creates a scalable model for addressing menstrual health inequity.