Case study: How a global fashion brand built a scalable garment take-back and circularity program

Why It Matters

Every second, the equivalent of a garbage truck of textiles is landfilled or incinerated globally, and the Ellen MacArthur Foundation (2025) estimates that less than one percent of clothing collected worldwide is recycled into new garments through fiber-to-fiber processes. The global fashion industry generates approximately 92 million tonnes of textile waste annually, a figure projected to reach 134 million tonnes by 2030 if current consumption patterns persist (UNEP, 2024). For fashion brands under increasing regulatory pressure from the EU Strategy for Sustainable and Circular Textiles, designing and scaling garment take-back programs is no longer a corporate social responsibility exercise. It is a strategic imperative tied to compliance, brand loyalty, and long-term material security.

This case study examines how H&M Group, one of the world's largest fashion retailers, built and scaled its garment collection initiative across more than 4,500 stores in over 80 markets. It traces the operational architecture, partnership model, sorting technology, and consumer engagement strategies that enabled the program to collect over 38,000 tonnes of textiles in 2024 alone (H&M Group, 2025). It also explores the persistent challenges of fiber-to-fiber recycling economics, contamination rates, and the gap between collection volumes and true circularity outcomes.

Key Concepts

Garment take-back programs allow consumers to return used clothing to retail locations regardless of brand or condition. The collected textiles are then sorted into categories: rewearable items for resale or donation, materials suitable for fiber-to-fiber recycling, items downcyclable into industrial rags or insulation, and residual waste. The value of a take-back program hinges on its ability to maximize the proportion of textiles that remain in high-value use rather than being downcycled or landfilled.

Fiber-to-fiber recycling refers to the process of breaking down post-consumer textiles into raw fibers that can be spun into new yarn and woven or knitted into new fabric. Mechanical recycling shreds garments and re-cards the fibers, but this shortens fiber length and typically requires blending with virgin material. Chemical recycling dissolves the polymer structure of synthetic or cellulosic fibers and reconstitutes them at near-virgin quality, but it remains capital-intensive and operates at limited commercial scale.

Extended Producer Responsibility (EPR) frameworks, now being implemented or proposed in France, the Netherlands, Sweden, and across the EU, require fashion brands to finance the collection, sorting, and recycling of end-of-life garments. France's Re_fashion scheme, operational since 2008, collected 272,000 tonnes in 2024 and serves as a model for emerging EPR systems (Re_fashion, 2025). Under EPR, brands that invest early in take-back infrastructure gain a cost advantage over competitors who must later pay into collective schemes.

Sorting technology has advanced significantly. Near-infrared (NIR) spectroscopy automated sorting lines, such as those developed by TOMRA and Valvan Baling Systems in partnership with Fibersort, can identify fiber composition at speeds of over one garment per second with accuracy exceeding 95 percent (TOMRA, 2025). Accurate sorting is critical because fiber-to-fiber recycling processes require feedstock with known and consistent composition.

What's Working and What Isn't

Successes. H&M's Garment Collecting program has demonstrated that scale is achievable when collection infrastructure is embedded into existing retail operations. By placing collection bins in stores, the program leverages foot traffic without requiring separate logistics networks. Between 2013 and 2024, the initiative collected a cumulative total exceeding 250,000 tonnes of textiles globally (H&M Group, 2025). Partnering with I:CO (I:Collect), a specialist in post-consumer textile sorting and processing, allowed H&M to access established downstream channels for rewear, recycling, and repurposing without building sorting facilities in-house.

Consumer engagement has been incentivized through discount vouchers offered in exchange for returned garments. H&M reported that participation rates in stores offering vouchers were approximately 35 percent higher than in stores without incentive mechanisms (H&M Group, 2025). Zara's parent company Inditex launched a similar program in 2023, collecting 70,000 tonnes by end of 2024 across its brands, using a combination of in-store bins and home pickup scheduling through its app (Inditex, 2025).

Automated sorting technology is also proving effective at improving feedstock quality. The SIPTex facility in Malmö, Sweden, backed by funding from the Swedish Innovation Agency and operational since late 2024, processes up to 24,000 tonnes of textiles per year using NIR sorting. Early results show that the plant achieves fiber identification accuracy of 96 percent across 45 textile categories, a critical threshold for enabling commercial-scale chemical recycling (IVL Swedish Environmental Research Institute, 2025).

Persistent challenges. Despite impressive collection volumes, the share of textiles achieving true fiber-to-fiber recycling remains stubbornly low. The Ellen MacArthur Foundation (2025) reports that only 0.7 percent of all collected clothing globally undergoes closed-loop recycling. The vast majority is exported for resale in secondary markets, downcycled into lower-value products, or incinerated with energy recovery. H&M's own sustainability report acknowledges that approximately 50 to 60 percent of collected garments are resold, 30 to 35 percent are downcycled, and only 5 to 10 percent enter recycling pathways (H&M Group, 2025).

Blended fabrics present a fundamental technical barrier. Polycotton blends, which constitute roughly 35 percent of the global garment mix, cannot be efficiently separated using current mechanical recycling methods. Chemical separation technologies from companies such as Renewcell (which filed for bankruptcy in early 2025 despite technological promise) and Worn Again Technologies are still scaling toward commercial viability (Reuters, 2025). The collapse of Renewcell highlighted the financial fragility of recycling infrastructure that depends on offtake agreements from fashion brands that have not yet committed to purchasing recycled feedstock at price premiums.

Collection logistics in lower-income and rural markets remain underdeveloped. While urban flagship stores generate high collection volumes, smaller stores in emerging markets lack the storage capacity and reverse-logistics networks to participate effectively.

Key Players

Established Leaders

• H&M Group — Pioneer of in-store garment collection since 2013, operating take-back across 4,500+ stores globally.
• Inditex (Zara) — Scaled collection to 70,000 tonnes by 2024 with in-store and app-based pickup options.
• I:CO (I:Collect) — Global post-consumer textile sorting and processing partner, handling millions of tonnes annually.
• TOMRA — Developer of sensor-based sorting technology including NIR systems for textile fiber identification.

Emerging Startups

• Circ — Chemical recycling startup focused on separating polycotton blends into reusable polyester and cellulose streams. Raised $100 million in Series B funding in 2024.
• Infinited Fiber Company — Finnish company producing Infinna, a regenerated textile fiber from cotton-rich waste, with a 30,000-tonne commercial plant under construction.
• Worn Again Technologies — UK-based chemical recycling company developing polyester and cellulose separation technology.
• Refiberd — AI-powered textile sorting using hyperspectral imaging for high-speed composition analysis.

Key Investors/Funders

• H&M Foundation — Funds textile recycling innovation through the Global Change Award, investing over €18 million since 2015.
• European Investment Bank — Provided €60 million in financing for circular textile infrastructure projects across the EU in 2024.
• Fashion for Good — Amsterdam-based innovation platform backed by major brands, funding pilot-stage circular fashion startups.
• Breakthrough Energy Ventures — Invested in chemical recycling technologies applicable to textile waste streams.

Examples

H&M Garment Collecting (Global). H&M's program represents the largest brand-operated textile collection initiative in the world. Customers bring unwanted clothing of any brand or condition to any H&M store and receive a discount voucher in return. The collected garments are sent to I:CO's sorting facilities, where they are categorized into rewear, reuse, recycle, and energy recovery streams. In 2024, the program collected 38,400 tonnes, representing approximately 192 million garments. The program's strength lies in its integration with existing retail infrastructure, but its circularity outcomes remain constrained by downstream recycling capacity.

SIPTex Automated Sorting Plant (Malmö, Sweden). Operated by Sysav, a municipal waste company, SIPTex is Europe's first large-scale automated textile sorting facility. Using NIR spectroscopy, the plant sorts post-consumer textiles by fiber type and color at industrial throughput. The facility processes textiles collected from across Scandinavia and feeds sorted mono-material streams to recyclers. The plant's 96 percent accuracy rate has attracted interest from chemical recyclers who require consistent feedstock, and a second sorting line was commissioned in early 2025 to double capacity to 48,000 tonnes per year (IVL Swedish Environmental Research Institute, 2025).

Inditex Closing the Loop (Spain and Europe). Inditex integrated garment collection into its retail and e-commerce operations across Zara, Massimo Dutti, and other brands. The company partnered with Caritas and local social enterprises in Spain to handle sorting and resale, creating both environmental and social impact. In 2024, 58 percent of collected garments were resold through charitable partners, while 12 percent entered recycling streams. Inditex committed to using 40 percent recycled or sustainably sourced fibers across all products by 2030 (Inditex, 2025).

Circ Chemical Recycling (Virginia, USA). Circ developed a hydrothermal process that separates polycotton blends, recovering both polyester and cellulose at high purity. In 2024, the company completed a commercial demonstration plant processing 10 tonnes per day. Partnerships with Zara and other brands provide offtake commitments for the recycled output. Circ's technology addresses one of the most significant barriers to textile circularity: the inability to recycle blended fabrics through conventional mechanical processes.

Action Checklist

• Audit your textile waste stream. Map garment volumes, fiber compositions, and current end-of-life pathways to identify the highest-impact intervention points.
• Embed collection into existing operations. Use retail locations, distribution centers, or e-commerce return logistics as collection points to minimize infrastructure costs.
• Partner with specialist sorters and recyclers. Establish relationships with automated sorting facilities and fiber-to-fiber recyclers rather than building capabilities in-house.
• Incentivize consumer participation. Offer discount vouchers, loyalty points, or charitable donation receipts to drive return volumes. Test different incentive structures across markets.
• Commit to recycled fiber offtake. Sign multi-year purchase agreements for recycled fibers to provide demand certainty for recycling infrastructure investors.
• Invest in design for recyclability. Reduce blended fabrics, minimize trims and embellishments, and use mono-material construction to improve downstream recyclability.
• Prepare for EPR compliance. Monitor regulatory developments in target markets and build take-back infrastructure ahead of mandatory requirements.
• Track and report circularity metrics. Measure collection rates, sorting accuracy, fiber-to-fiber recycling rates, and waste diversion percentages. Publish progress transparently.

FAQ

How much does it cost to run a garment take-back program? Costs vary significantly by scale and geography. For a major retailer like H&M, in-store collection bins cost relatively little to install and maintain, but downstream sorting and processing costs range from €200 to €500 per tonne depending on the level of contamination and the sorting technology used. EPR schemes in France currently charge brands between €0.01 and €0.15 per unit placed on the market, depending on the product's recyclability characteristics (Re_fashion, 2025).

What percentage of collected garments actually gets recycled into new clothing? Currently, less than one percent of all collected clothing undergoes true fiber-to-fiber recycling globally (Ellen MacArthur Foundation, 2025). The majority of collected textiles are resold as secondhand clothing (50 to 60 percent), downcycled into industrial rags or insulation (25 to 35 percent), or sent to energy recovery. Closing this gap requires significant investment in chemical recycling infrastructure and design-for-recyclability practices.

What role does automated sorting technology play? Automated sorting using NIR spectroscopy is critical for scaling textile recycling. Manual sorting cannot achieve the fiber-composition accuracy or throughput required by chemical recyclers. Facilities like SIPTex in Sweden demonstrate that automated sorting can identify fiber composition with over 95 percent accuracy at speeds exceeding one garment per second. This enables the creation of consistent mono-material feedstock streams that chemical recyclers need to operate efficiently (IVL Swedish Environmental Research Institute, 2025).

Why did Renewcell fail despite having promising technology? Renewcell, the Swedish chemical recycling company, filed for bankruptcy in January 2025 despite having a commercially operational plant. The primary cause was insufficient offtake commitments from fashion brands, who were reluctant to pay the price premium required for recycled cellulosic fiber compared to virgin viscose. The case illustrates that technology alone is insufficient without guaranteed demand from the fashion industry (Reuters, 2025).

How will EU EPR regulations change the landscape? The EU Strategy for Sustainable and Circular Textiles, expected to mandate EPR schemes across all member states by 2027, will require fashion brands to finance collection, sorting, and recycling of their products. Brands that have already invested in take-back infrastructure will face lower compliance costs, while those without established programs will need to pay into collective schemes or rapidly build their own systems. France's existing EPR scheme, which has been operational since 2008, demonstrates that mandatory frameworks significantly increase collection rates compared to voluntary programs.

Sources

• Ellen MacArthur Foundation. (2025). Circular Design for Fashion: Textile Waste and Fiber-to-Fiber Recycling Rates. Ellen MacArthur Foundation.
• H&M Group. (2025). Sustainability Disclosure 2024: Garment Collecting Programme Results. H&M Group.
• Inditex. (2025). Annual Report 2024: Closing the Loop Collection and Circular Fiber Targets. Inditex.
• IVL Swedish Environmental Research Institute. (2025). SIPTex: Results from Europe's First Large-Scale Automated Textile Sorting Plant. IVL.
• Re_fashion. (2025). Annual Activity Report 2024: EPR for Textiles in France. Re_fashion.
• Reuters. (2025). Renewcell Files for Bankruptcy Amid Weak Demand for Recycled Textile Fibers. Reuters.
• TOMRA. (2025). Sensor-Based Textile Sorting: Technology Performance and Deployment Scale. TOMRA.
• UNEP. (2024). Global Textile Waste: Environmental Impact and Circular Economy Pathways. United Nations Environment Programme.