The 3rd UNFSS Flagship is set to impart an agenda surrounding Voluntary Sustainability Standards (thereafter known as VSS) and its relation to trade issues, in particular the impact of VSS on market access. Where traditional trade theory is concerned, the focus has been mainly tied to tariffs and non-tariff measures. Given the increasing increasing influence of VSS over export opportunities in recent years, the objective of this report is to provide an in-depth understanding of VSS from trade policy perspective and explore how trade can shape the influence of VSS on developing countries' market access. The key questions of this report include: What are the impacts of VSS from the trade policy perspective? What sustainability concerns do VSS address? Do VSS have significant impact upon developing countries trade success and in their achievements of the Sustainable Development Goals (SDGs)? What can public actors do to support VSS' contribution to trade opportunities? What can potentially be the stipulated roles of global governance?