This study reinterprets the Digital Product Passport (DPP), introduced under the EU Ecodesign for Sustainable Products Regulation (ESPR), not as a post-development information tool but as a design condition embedded throughout the fashion design process. It proposes a design framework that links DPP requirements to stage-based decision-making in fashion design. While existing studies have focused on policy, technological infrastructure, and supply chain management, limited attention has been given to integrating DPP into design decision-making. This study reviews ESPR-related policy documents and prior research to derive six core DPP information categories using a literature-based approach. These categories are then integrated into a seven-stage fashion design process, building on the model of Lamb and Kallal by adding a stage for “information design and lifecycle integration.” This study identifies how DPP information functions as design decision criteria across various stages. Finally, the findings are synthesized into a framework integrating DPP information and post-launch feedback. DPP information in fashion is categorized into six domains: traceability, material and chemical data, supply chain information, environmental impact, use and care, and end-of-life management. When mapped onto the seven-stage design process, DPP requirements guide design directions during the design refinement stage and translate into product-level data at the prototype development stage. This study integrates both pre-design and post-launch feedback and reconceptualizes DPP as an embedded design condition, contributing to a theoretical link between design practice and regulatory compliance.

Abstract
I. Introduction
    1. Background
    2. Research questions and methods
Ⅱ. Literature Review
    1. Sustainability institutionalization and DPPregulations
    2. Theoretical limitations of fashion designprocesses in the DPP context
    3. The disconnect between DPP informationsystems and fashion design decision-making processes
Ⅲ. Methodology
    1. Structuring essential DPP information basedon a literature review
    2. DPP information alignment across the stagesof the fashion design process
    3. Development of a fashion design framework
Ⅳ. Result
    1. Structural analysis of ESPR and DPPrequirements
    2. Alignment of DPP requirements across thestages of the fashion design process
    3. A theoretical framework for DPP integrationbased on the fashion design process
Ⅴ. Discussions
    1. Reframing design decision-making through theoperationalization of DPP information
    2. Transitioning from linear design processes tocircular information-driven design processes
    3. Theoretical and practical implications of adesign-based framework for DPP implementation
Ⅵ. Conclusions
References

• Jihyeon Kim(Master's Course, Integrated Design, Yonsei University, Korea) | 김지현 (연세대학교 통합디자인학과 패션디자인전공 석사과정)
• Eun Kyoung Yang(Associate Professor, Integrated Design, Yonsei University, Korea) | 양은경 (연세대학교 통합디자인학과 패션디자인전공 부교수) Corresponding author