Recycled Materials in Backpacks: RPET, Ocean Plastic, and More

The backpack industry is undergoing a material revolution. As consumers become more environmentally conscious and the fashion industry faces increasing scrutiny over its environmental impact, recycled backpack materials have moved from a niche marketing point to a mainstream expectation. Major brands are rethinking their fabric supply chains, and the results are changing what backpacks are made of.

This guide explores the full landscape of recycled materials used in modern backpacks. From RPET (recycled polyester from plastic bottles) to ECONYL (regenerated nylon from fishing nets), from ocean plastic initiatives to recycled cotton canvas, we cover the technologies, certifications, performance characteristics, and environmental impact of each material. By the end, you will understand exactly what those sustainability labels mean and how to make informed choices about the backpacks you buy.

The Case for Recycled Backpack Materials

Before diving into specific materials, it is worth understanding why recycled fabrics matter. The environmental impact of virgin textile production is staggering:

Recycled materials directly address these problems by diverting waste from landfills and oceans, reducing the demand for virgin petroleum-based raw materials, and lowering the energy consumption and greenhouse gas emissions associated with fabric production. When you choose a backpack made from recycled materials, you are voting with your wallet for a more sustainable industry.

RPET: Recycled Polyester from Plastic Bottles

RPET (Recycled Polyethylene Terephthalate) is the most widely used recycled material in backpacks today. It is made from post-consumer PET plastic bottles that would otherwise end up in landfills or the environment.

The Manufacturing Process

The journey from plastic bottle to backpack fabric involves several carefully controlled steps:

1. Collection: Used PET bottles are collected from recycling centres, deposit schemes, and waste streams. Quality sorting ensures only PET bottles (not other plastics) enter the process.
2. Cleaning and Sorting: Bottles are washed to remove labels, adhesives, caps, and contaminants. They are sorted by colour, as clear bottles produce the most versatile recycled yarn.
3. Shredding: Clean bottles are shredded into small flakes, typically 5 to 10 millimetres in size.
4. Melting and Extrusion: The PET flakes are melted at approximately 260 degrees Celsius and extruded through spinnerets to create continuous filaments. This step is identical to virgin polyester production, except the raw material comes from recycled bottles instead of petroleum.
5. Texturing and Weaving: The recycled polyester filaments are textured, spun into yarn, and woven into fabric using standard textile manufacturing processes.

Performance Compared to Virgin Polyester

RPET matches or closely approaches the performance of virgin polyester in almost every measurable way:

• Tensile Strength: Equivalent to virgin polyester. Modern recycling processes produce filaments with identical molecular structure.
• Abrasion Resistance: Equivalent performance. The recycled polyester fibres have the same hardness and surface characteristics.
• Colour Fastness: Modern RPET accepts dyes as effectively as virgin polyester, producing equally vibrant and long-lasting colours.
• Water Absorption: Identical low absorption characteristics, as both materials are derived from the same PET polymer.
• UV Resistance: Equivalent resistance to ultraviolet degradation.

The only area where RPET historically lagged was in consistency and fibre diameter control, but advances in recycling technology have largely eliminated this gap. Premium RPET fabrics from certified suppliers are indistinguishable from virgin polyester in performance testing.

ECONYL: Regenerated Nylon from Waste

ECONYL is a specific brand of regenerated nylon produced by the Italian company Aquafil. It has become the most recognised name in recycled nylon and is used by numerous premium backpack brands. What makes ECONYL remarkable is its feedstock: it is made from waste materials that would otherwise be extremely difficult to recycle.

The Feedstock: Fishing Nets and Industrial Waste

ECONYL is produced from several types of nylon waste:

• Abandoned fishing nets: Often called "ghost nets," these are nylon fishing nets that have been lost or discarded in oceans and waterways. They represent a significant threat to marine life, entangling fish, dolphins, turtles, and other sea creatures. ECONYL's regeneration process gives these harmful wastes a second life.
• Carpet flooring: Post-consumer carpet tiles and flooring materials contain significant nylon content that can be recovered.
• Industrial plastic waste: Nylon waste from manufacturing processes that would otherwise be landfilled.
• Other nylon waste: Including fabric scraps from clothing production and industrial nylon components.

The Regeneration Process

ECONYL's regeneration process uses a chemical depolymerisation technique. Unlike mechanical recycling (which simply melts and re-extrudes plastic), this process breaks the nylon polymer down to its molecular building blocks (caprolactam), purifies them, and then rebuilds them into brand-new nylon 6 polymer. The result is nylon that is chemically identical to virgin nylon 6, with no loss of quality regardless of how many times the process is repeated.

Performance

ECONYL regenerated nylon is identical in performance to virgin nylon 6. It has the same tensile strength, abrasion resistance, elasticity, and dye absorption. Backpack manufacturers can use ECONYL as a direct replacement for virgin nylon without any design compromises. This makes it one of the most compelling sustainable material options available, offering full performance with dramatically reduced environmental impact.

Ocean Plastic: Adidas x Parley and Beyond

The Adidas x Parley collaboration, launched in 2015, brought ocean plastic into mainstream consumer awareness. While primarily associated with footwear and sportswear, the technology and concept have since expanded into backpacks and bags.

How Ocean Plastic Is Collected and Processed

Organisations like Parley for the Oceans work with coastal communities around the world to intercept plastic waste before it reaches the ocean. This collected plastic is sorted, cleaned, and processed into raw material for fibre production. The process is similar to RPET production, but with additional steps to handle the specific contaminants found in ocean-bound plastic (salt, biological matter, degradation from UV exposure).

Several backpack brands have adopted ocean plastic as a material source. The resulting fabrics carry a powerful sustainability narrative that resonates strongly with environmentally conscious consumers. However, it is worth noting that "ocean plastic" and "RPET" are essentially the same material (recycled PET polyester) from different collection streams. The performance characteristics are identical.

Other Ocean Plastic Initiatives

Beyond Adidas x Parley, several organisations and brands work with ocean-sourced plastics:

• Bureo: Collects fishing nets from South American coastlines and processes them into NetPlus material, used in backpack hardware (buckles, zipper pulls) and fabric components.
• #tide ocean material: A Swiss company that processes ocean-bound plastic from coastal regions into certified recycled polyester fibre for textile applications.
• Repreve by Unifi: While not exclusively ocean plastic, Repreve produces recycled polyester from various waste streams including ocean-bound plastic, and is widely used in backpack manufacturing.

Recycled Cotton and Canvas

While recycled polyester and nylon dominate the conversation, recycled cotton is also making inroads into the backpack market, particularly in heritage and lifestyle segments.

Mechanical Recycling of Cotton

Recycled cotton is produced by mechanically shredding post-industrial cotton waste (fabric offcuts from garment manufacturing) or post-consumer cotton garments into fibre form. These fibres are then respun into new yarn. The process is relatively simple and low-energy, but it produces shorter fibres than virgin cotton, which can reduce yarn strength.

For backpack applications, recycled cotton is often blended with virgin cotton or recycled polyester to compensate for the reduced fibre length. The resulting fabric has the look and feel of traditional cotton canvas but with a reduced environmental footprint. Several heritage-style backpack brands have incorporated recycled cotton into their product lines.

Chemical Recycling of Cotton

Emerging chemical recycling technologies can break cotton down to its cellulose molecules and rebuild it into new fibres with performance equal to virgin cotton. Companies like Infinited Fiber and Renewcell are pioneering this approach. While these technologies are not yet widely used in backpack production, they represent the future of sustainable cotton-based fabrics.

Certifications: How to Verify Recycled Claims

With sustainability claims becoming a competitive advantage, greenwashing (false or exaggerated environmental claims) is a real concern. These certifications help you verify that recycled material claims are legitimate:

Global Recycled Standard (GRS)

The GRS is the most comprehensive certification for recycled materials. It verifies:

• The exact percentage of recycled content in the material
• The chain of custody from recycling facility to final product
• Compliance with environmental management practices
• Chemical restrictions (prohibited substances lists)
• Social compliance (fair labour practices in the supply chain)

When a backpack is certified GRS, you can trust that the recycled content claim is independently verified. Look for the GRS label and check the certified percentage (e.g., "Made with 100% GRS-certified recycled polyester").

bluesign

The bluesign system focuses on chemical management and environmental impact throughout the textile supply chain. A bluesign-certified fabric ensures that:

• No harmful chemicals were used in the production process
• Resource productivity was optimised (minimising water and energy use)
• Emissions and wastewater were responsibly managed
• The final product is safe for consumers and the environment

While bluesign does not specifically certify recycled content, bluesign-certified recycled fabrics offer both verified sustainability and chemical safety assurance. Many premium outdoor brands require bluesign certification for their fabrics.

Oeko-Tex Standard 100

Oeko-Tex Standard 100 is a testing and certification system for textile raw materials, intermediate, and finished products. It verifies that the product has been tested for harmful substances and is safe for human use. While it does not specifically verify recycled content, it is commonly found alongside GRS certification on backpacks and provides assurance that the recycled fabric meets strict safety standards.

Other Relevant Certifications

• Recycled Claim Standard (RCS): A simpler alternative to GRS that verifies recycled content percentage but has fewer requirements for social and environmental compliance.
• Cradle to Cradle Certified: Evaluates products across material health, product circularity, clean air and climate protection, water and soil stewardship, and social fairness.
• Climate Neutral Certified: Verifies that a brand has measured, offset, and taken responsibility for its entire carbon footprint.

Performance vs. Virgin Materials: The Data

The most important question for backpack buyers is simple: do recycled materials perform as well as virgin materials? The answer, backed by independent testing, is a resounding yes for modern recycled fabrics.

The cost premium for recycled materials has been shrinking steadily as recycling infrastructure scales up and technology improves. In some cases, RPET is now cost-competitive with virgin polyester, particularly when oil prices are high.

Environmental Impact: The Numbers

The environmental benefits of recycled backpack materials are substantial and well-documented:

Recycled Polyester (RPET) vs. Virgin Polyester

• Energy Reduction: Approximately 59 percent less energy required for production
• CO2 Reduction: Approximately 32 percent fewer greenhouse gas emissions
• Water Usage: Approximately 20 percent less water consumption
• Waste Diversion: Each kilogram of RPET diverts approximately 60 plastic bottles from landfills or the environment

Recycled Nylon (ECONYL) vs. Virgin Nylon

• Energy Reduction: Approximately 90 percent less energy required (compared to virgin nylon 6)
• CO2 Reduction: Approximately 80 percent fewer greenhouse gas emissions
• Waste Diversion: Each tonne of ECONYL diverts approximately 5 to 10 tonnes of waste (fishing nets, carpet, industrial waste) from landfill or ocean
• Marine Impact: By recovering ghost fishing nets, ECONYL directly reduces a major source of ocean pollution that kills marine life

Brand Examples: Who Is Leading the Way

Several backpack brands have made recycled materials central to their product strategy. Here are some notable examples:

Patagonia

Patagonia has been a pioneer in recycled materials since 1993, when they became the first outdoor clothing company to fleece from recycled plastic bottles. Today, the majority of Patagonia's fabrics are made from recycled materials. Their backpacks use recycled polyester and recycled nylon wherever possible, with GRS certification providing verification. Patagonia also operates the Worn Wear programme, which repairs and resells used gear to extend product lifespans.

Osprey

Osprey, one of the world's leading backpack brands, has committed to using 100% bluesign-approved fabrics across their product line. Many of their packs incorporate recycled nylon and recycled polyester, and they provide clear information about the recycled content percentage for each product. Osprey's All Mighty Guarantee programme also supports sustainability by offering lifetime repairs on all their packs.

Fjallraven

The Swedish outdoor brand has made significant commitments to recycled and sustainable materials. Their Re-Kanken backpack line is made entirely from recycled polyester (SpinDye solution-dyed recycled polyester, which uses even less water and chemicals in the dyeing process). Fjallraven also offers waxed canvas options using natural, environmentally responsible waxes.

Got Bag

This German brand makes backpacks entirely from ocean plastic collected from the Indonesian coast. Each backpack uses the equivalent of approximately 3.5 kg of ocean plastic. Got Bag works with local collectors and provides transparency about the collection and processing chain.

Cotopaxi

Cotopaxi's Del Dia collection uses remnant fabric from other manufacturers' production runs, creating unique one-of-a-kind colour combinations while ensuring zero waste. Their standard lines increasingly incorporate recycled nylon and polyester.

Roka

Roka uses ECONYL regenerated nylon in several of their products, demonstrating that premium performance brands can adopt recycled materials without compromising on quality or durability standards.

How to Identify Genuinely Sustainable Backpacks

Not all "eco-friendly" claims are equally meaningful. Here is a checklist for evaluating the sustainability credentials of a backpack:

• Specific Material Claims: Look for specific percentages (e.g., "Made from 100% recycled polyester") rather than vague terms like "eco-friendly" or "sustainable" without further detail.
• Certification Labels: GRS, bluesign, and Oeko-Tex are the most meaningful certifications. Look for certification numbers that can be independently verified.
• Supply Chain Transparency: Brands that disclose where their recycled materials come from and how they are processed are more likely to have genuine sustainability commitments.
• Holistic Approach: True sustainability goes beyond fabric. Consider the brand's approach to packaging, shipping, labour practices, repair services, and product end-of-life.
• Third-Party Verification: B Corp certification, Climate Neutral certification, and similar third-party assessments indicate broader sustainability commitments beyond just material choice.

The Future of Recycled Backpack Materials

The recycled materials landscape is evolving rapidly. Several emerging technologies promise to further improve the sustainability of backpack fabrics:

• Bio-based Nylon: Nylon derived from castor oil plants rather than petroleum. While not recycled, it reduces dependence on fossil fuels. Several outdoor gear manufacturers are beginning to use bio-based nylon in their products, and as production scales up, costs are expected to decrease significantly.
• Chemical Recycling at Scale: New chemical recycling processes can handle mixed-material textiles (cotton-polyester blends) that are currently unrecyclable, dramatically expanding the potential feedstock for recycled fibres.
• Circular Design: Brands are designing backpacks with end-of-life recycling in mind, using single-material construction and recyclable hardware to enable full-circle material recovery.
• Carbon-Neutral Production: The most advanced manufacturers are combining recycled materials with renewable energy production to achieve carbon-neutral or even carbon-negative fabric production.

Frequently Asked Questions