The story is essentially the same in all versions of the Guide, but the language, cultural references and some activities have been adjusted to suit the respective context better. The South Asian version, Ruby's World, was developed together with teachers and girls in India through a user-centered design approach. The language, cultural references and activities are tailored specifically to the needs of girls in South Asia. Rosie's World was adapted from Ruby's World for the Sub-Saharan African context. WASH United also applied a user-centred design approach for this adaptation and partnered with Girl Guides and Girl Scouts from WAGGGS to test and adjust the Guide. For the Latin American and the Middle Eastern & North African (NOCA) versions, we also partnered with local organisations who supported the contextualisation.