Éco-conçu depuis 2017.
Mesuré depuis.
A chosen material. A nearby workshop. A piece you keep. Since 2017, eco-design has guided every one of our choices. With two independent design offices, we put it to the test with data. Here is what the measurements reveal.
A conviction established as early as 2017
Eco-design did not come later. It has been part of La Pièce Paris since its creation: choosing the right materials, manufacturing in France, and thinking of each piece as a tool to keep. Useful, understated elegance, designed to last.
It remained to be verified. To move from intention to evidence, we entrusted the analysis of our pieces to specialists using the benchmark tool: Life Cycle Assessment.
Measure the real impact, step by step
Life Cycle Assessment makes it possible to establish an environmental score and compare several scenarios, taking into account weight, material choices, and the place of manufacture. Beyond CO₂ alone, it considers the multiple impacts of a garment at every stage of its life.
Each piece was broken down component by component - from the outer fabric to the linings and zippers. Working closely with our suppliers, data for each material was collected and then compared with Ademe's Base Empreinte, the national reference for calculations.
De l'intuition à la donnée
Deux études, menées dans la durée
2022 — Première mesure, avec Deceo
Une sensibilisation à l'éco-conception et à l'économie circulaire, puis une Analyse de Cycle de Vie sur trois pièces, comparées à leurs équivalents de grande distribution.
Fabriquées en France, portées par un mix électrique décarboné, ces pièces ont confirmé l'intuition : produire ainsi change vraiment l'impact.
2023–2025 — Aller plus loin, avec Lucioles Conseil
Pendant plus de quatorze mois, douze pièces emblématiques ont été ouvertes et décortiquées : pesées, leurs composants identifiés un à un, leur parcours retracé — de la filature au tissage, de la teinture à la confection.
Les enseignements ont ensuite été intégrés dans Ecobalyse, l'outil du Ministère de la Transition Écologique, pour mesurer l'effet de chaque choix.
Ce que la mesure montre
Sources : ACV menées avec Deceo (2022) et Lucioles Conseil (2023–2025), Base Empreinte Ademe.
Thanks to manufacturing the products in France, combined with a decarbonized electricity mix, the process was approached with a certain peace of mind. The results of this assessment were a source of satisfaction and validation for our choices.
For example, the women's reversible CAMDEN fleece jacket emits 75% less CO2 than that of a leading sportswear company. Similarly, the DIAGONAL belt bag shows a 40% reduction in CO2 emissions and a 32% decrease in the use of fossil resources.
Thus, this study supports the fact that La Pièce's clothing range stands out for its low environmental impact, further proof of La marque's commitment to ethical and sustainable fashion.
This study is supported by:
It all starts with a simple idea: designing clothes that adapt, transform, and stand the test of time.
For over fourteen months, La Pièce Paris has undertaken in-depth work to get to grips with the material—quite literally.
For several months, the brand opened up its garments, processes, and intuitions, confronting them with the reality of data and usage.
Alongside the environmental consulting firm Lucioles Conseil, twelve iconic pieces were first subjected to a Life Cycle Assessment.
Each garment was taken apart: precisely weighed, its components identified one by one, and its journey traced—from spinning to weaving, and from dyeing to garment making.
Behind every stage lie places, expertise, and choices that already invite scrutiny.
But very quickly, the work moved beyond the theoretical framework.
At the same time, patternmaking work began to explore new approaches to garment construction. Adjusting, simplifying, optimizing… but also rethinking how garments interact with one another.
Because at La Pièce Paris, modularity is at the heart of the approach: a wardrobe designed as a system, where pieces can be combined, transformed, and evolve.
Using links or fastening systems, a sleeveless puffer jacket can be attached to a parka, while a button-on hood can be added to a new version of the bib...
This design approach opens up new possibilities for use, while also raising specific technical questions—attachment strength, assembly durability, and material compatibility—which were incorporated into the patternmaking process.
Another question arose along the way: what happens after the purchase?
Sustainability is not determined solely at the design stage.
The brand therefore explored the relevance of a repair service—its impacts, constraints, and true value in extending the life of components.
At every stage, the assumptions were tested, sometimes confirmed and sometimes challenged.
In a second phase, the lessons learned were incorporated into the French Ministry for Ecological Transition’s Ecobalyse tool to simulate improvement scenarios.
Changing a material, adjusting a component, modifying a process: all decisions whose effects could be measured concretely.
This back-and-forth between real-world experience and modeling helped produce more refined versions of the products, combining environmental standards, quality, and aesthetic consistency.
This meticulous work takes place in a rapidly changing context, with the introduction of Environmental Labeling planned for October 2026.
Rather than wait, La Pièce Paris has chosen to anticipate this change by gradually making information about the impact of its products available.
More than a compliance exercise, it is a way to share the journey so far—with its doubts, lessons learned, and trade-offs.
Because behind every piece, there is now more than just a style: there is a measured, tested story that is constantly improving.
