Jea Kyong Sim

Jea Kyong Sim

Jea Kyong Sim

Profession
Fashion Designer
Project
Jea Kyong Sim
Based in
Germany/Spain
Platform Member
Works at
-
Jea Kyong Sim

About the project

Living Garments as Material Air Archives

Breathing Paper is a citizen science project that turns traditional Korean hanji paper into wearable, non-electronic air pollution sensors. In Barcelona’s Poblenou neighborhood, participants wear white jackets made from hanji, a porous, pH-neutral paper crafted from paper mulberry bast fiber, for several weeks. As the paper traps airborne pollutants, it darkens and discolors, making invisible air quality visible on the body. Participants photograph this transformation regularly, building a collective “soiling diary” cross-referenced with local open-air quality data. Developed with the Poblenou Neighborhood Association, the project revives hanji’s historical use in garment-making while giving residents digital fabrication skills and full authorship of the artwork. It ends with a community-led exhibition at FabLab Barcelona, where the neighborhood presents its own material archive of the air it breathes, driving grassroots environmental awareness through craft, data, and shared experience.

 

About the projects’ approach

The project treats air quality monitoring as something communities can do with their hands, not just with instruments. Its methodology is open: garment patterns are released as open-source, laser-cuttable files with a citizen-science assembly toolkit, so anyone can reproduce or adapt the work. It is collaborative: local residents are co-authors, trading their lived experience of pollution for fabrication skills and keeping ownership of the final data archive. It is regenerative: hanji is a biodegradable, thousand-year material made from renewable paper mulberry, dyed with natural eco-dyes, and cut with zero-waste modular patterns. It is ecosystemic: the soiling diaries link individual bodies, neighborhood streets, and open municipal datasets into one legible system, connecting personal experience to environmental data infrastructure. The garment becomes both sensor and story, a material witness that makes the local atmosphere readable to the people who live in it.

 

About the designer

Jea Kyong Sim is a Korean fashion designer based in Berlin and Barcelona whose work investigates the intersection of identity and contemporary culture. With formal training in fashion design and visual anthropology, Sim integrates technical expertise with research-based storytelling to develop storytelling-centric collections that question traditional concepts of dress and belonging. His practice is informed by themes of migration, memory, and cultural hybridity, and it balances structured silhouettes with deliberate material selection and ethical production methods. Sim has showcased collections at Berlin Fashion Week and Seoul Fashion Week. His work demonstrates a sustained commitment to sustainability, craftsmanship, and enduring design principles. Through fashion, Sim seeks to produce garments that are both emotionally meaningful and practically durable, establishing clothing as a platform for personal expression and cultural discourse.
This profile is part of the CitiObs × Distributed Design cohort of creative practitioners selected through an international open call exploring the role of art, design, and making in environmental protection and citizen science. From 213 proposals submitted worldwide, 25 projects were selected for their ability to connect communities, environmental observation, and creative practice in meaningful and impactful ways. Discover more about the collaboration on the CitiObs website and read about the selected projects.