Co-design and co-production with non-academic stakeholders has been recognized as a key approach in transdisciplinary sustainability research. The majority of transdisciplinary studies have been conducted in Europe and North America, with a marked lack of such research in the Asian context-particularly with regard to healthcare. Utilizing a case study involving mobile health check-ups performed using a portable health clinic system in Jaipur, India, from March 2016 to March 2018, this study identifies key factors in co-design and co-production that should be considered to ensure the project's sustainability. Thoroughly reviewing all of the documents and materials related to the case study's co-design and co-production, this study identifies the following key factors:(1) mutual stakeholder agreement on a long-term research plan, protocol, and budget; (2) harmonizing research objectives, frames, and the scale of stakeholder expectations; (3) stakeholders' commitment and a sense of ownership derived from their needs and priorities; (4) stakeholder trust; (5) effective coordinators; (6) personality type and characteristics of stakeholder leaders; (7) capacity building and the empowerment of local research staff and participants; and (8) continuous efforts to involve stakeholders throughout the co-design and co-production processes. Facilitating effective co-design and co-production, these factors will help ensure the future sustainability of projects.Sustainability 2018, 10, 4148 2 of 16 research [1]. As such, adopted approaches tend to involve a mutual learning process and joint partnerships between interdisciplinary scholars and non-academic stakeholders from the fields of science, industry, politics, technology, and civil society [1,8,9]. Exemplifying the practical utility of such an approach, an international research program called "Future Earth" was launched at the United Nations (UN) Conference on Sustainable Development in June 2012. Incorporating the natural and social sciences to solve global environmental issues [10], Future Earth has "pioneered approaches to the co-design and co-production of solutions-oriented, transdisciplinary research for global sustainable development" [11].However, transdisciplinary research remains hampered in a number of ways. First, the most recent reviews of transdisciplinary case studies have concluded that the methods and concepts of co-design and co-production processes lack clarity [1,2,4,12]. Second, the majority of extant transdisciplinary research only describes the early stages of co-design, rather than its actual implementation and application [2,7]. Indeed, which studies include key components of early co-design-such as the "framing of problems" [4,12,13], "social capital and partnerships with mutual trust" [14-16], "scaling" [17], "accountability" [9,18], "ownership" [18], as well as "priorities and needs" [1,9]-few have used case studies to discuss both co-design and co-production in a comprehensive, bottom-up manner [4]. Third, in comparison to Europe and North Amer...