The increased concern for the environment and climate change has elevated sustainability to the top of the economic priority list. From its genesis to the conclusion of its life cycle, every product strives to leave the most negligible possible environmental impact, putting pressure on the circular supply chain (SC) to be as environmentally friendly as possible. A product's packaging is essential for safeguarding the product and simplifying its transit from the place of manufacture to the site of consumption/use. This is why packaging is such a critical component of the circular SC. Despite technological advancements, the lengthening of the global supply chain has resulted in the increased use of multiple layers of packaging: primary packaging holds the product, secondary packaging stores multiple primary packages for inventory management, and tertiary packaging contains multiple secondary packages, facilitating product storage and transportation. Most packaging layers lead to the generation of additional trash throughout the supply chain (Alejandrino et al, 2021). Plastic and other non-recyclable packaging materials have significant environmental implications, leading to pollution, waste creation, and resource depletion. They support the linear management model of "take-make-dispose," which is not long-term viable. (Gamage et al, 2023).Packaging clearly impacts diverse ecosystems, and its position in the circular economy must be thoroughly investigated. Packaging may substantially contribute to resource restoration and regeneration by adding value to the product while utilizing as few resources and materials as possible. At the same time, it enables better waste management, either through recycling or reusing packaging materials (Meherishi et al., 2019). In the age of the circular economy, the role of packaging in the supply chain must be reconsidered, in regard to the product flow and how it affects in the circular SC. According to research, sustainable packaging substantially impacts the circular economy (Meherishi et al., 2019). However, the parameters for optimizing the benefits of employing sustainable packaging in supply chains within the context of a circular economy have yet to be adequately explained. Given their growing concern about the environment, the final customer should and must be considered. This is reflected in their efforts to make better decisions and their increased preference for and demand for biodegradable and compostable packaging. (Farooque et al. 2019). Developing sustainable packaging is a challenging and complex process that requires considering numerous parameters and interests. As a result, rather than the typical optimization strategy based purely on goals, achieving sustainability must be built on multi-scale processes tackled systematically through vision-guided planning. (Ceschin & Gaziulusoy, 2016 & Cozzolino & De Giovanni, 2023). It is obvious that the sustainability of packaging begins with its design. The following research questions are addressed in this paper:

1. What are the advantages and impact of incorporating sustainable packaging into the context of a circular SC?

2. What elements and tools should be considered when designing sustainable packaging?

3. What are the barriers and challenges of using sustainable packaging in the context of a circular SC?

Digital material or product passports (DPPs) are emerging as a promising tool for improving transparency and sustainability in construction supply chains. However given the emergent nature of the concept and the complexities in the construction supply chains, academic understanding of their implications for construction supply chains is rather limited. This research aims to capture learnings from early DPP pilots, investigate the implications of DPPs on circular practices and to identify effective conditions to facilitate the large-scale adoption in industry. By analyzing data from five in-depth case studies of pilot initiatives, the research seeks to capture valuable from early DPP implementation within the construction industry. Our investigation reveals mechanisms employed in practice to establish a DPP ecosystem, highlighting the crucial role played by orchestration organizations. We further identify a range of challenges associated with early implementation and propose a set of prerequisites for successful DPP development and adoption. Our study is one of the early studies to examine in depth the emergence of DPPs as an ecosystem in practice. The findings lay the foundation for further research on this important yet underresearch topic.