In order to unify the labeling requirements for COVID-19 vaccines that will be supplied through the Access to COVID-19 Tools (Act) Accelerator, draft models for the vial labels and packaging have been proposed by the World Health Organization and Coalition for Epidemic Preparedness Innovation (CEPI). PATH's Living Labs Initiative used human-centered design methods to engage healthcare workers in Kenya and Zambia to evaluate these draft models. Their feedback on their desired features of vaccine labels and packaging have informed a series of recommendations for manufacturers for future vaccine vial development and for universal training guidelines for immunizations workers on the COVID-19 vaccine.