Neither fabric wins outright. Organic cotton is the better fit for tees, hoodies, sweatpants and everyday casualwear, where softness and a natural hand matter. Recycled polyester is the better fit for activewear, outerwear and team gear, where quick drying and shape retention matter. The right choice depends on what the garment does, how it will be washed, and what you can honestly claim on the label.
This guide is written for brands, designers, teams and marketers who are deciding what to put on the blank before it gets printed. It covers how each fiber is made, how they compare on environmental impact, comfort and care, what happens at end of life, which certifications to look for in the U.S., and how to decide.
TL;DR
- Choose organic cotton for casualwear: tees, hoodies, sweatpants and loungewear. Choose recycled polyester for sweat-heavy, high-movement and outdoor garments.
- Neither fiber is automatically “the green one.” Dyeing, finishing and factory efficiency can matter as much as the fiber itself.
- Recycled polyester sheds microplastic fibers in the wash. Organic cotton avoids that, but its farming and processing still carry impacts.
- Back every claim with a certification (GOTS, OCS or USDA organic for cotton; GRS for recycled content) and state real percentages, as the FTC expects.
- Print method matters too: the fabric you pick should be matched to DTG, DTF, screen printing or embroidery before you order.
Table of Contents
- How each fabric is made
- Environmental impact: what the evidence says
- Comfort, performance and durability
- What happens when the garment is retired
- Certifications and claims for U.S. buyers
- How to choose for your brand
- Start with the right blank
- Common mistakes to avoid
- FAQ
- Sources
How each fabric is made
Organic cotton is cotton grown from non-GMO seed, without synthetic pesticides while the crop is growing, using natural fertilizers and natural pest control. That is the farming definition, as Decathlon’s ecodesign criteria describe it. After harvest, the fiber is ginned, spun, knit or woven, dyed and finished like any other cotton, which is why the later steps deserve as much attention as the field.
Recycled polyester (often written rPET) is usually made from post-consumer plastic bottles. The bottles are cleaned and shredded into flakes, melted, and extruded into filament, which is then spun into yarn (Decathlon). The resulting fabric behaves much like virgin polyester. NRDC notes that you would need to be a real expert to tell the difference between virgin and recycled polyester in the finished product (NRDC).
That last point is good news for a brand. You are not trading performance for a sustainability story when you choose recycled polyester: you are choosing the same performance with different raw material.
Environmental impact: what the evidence says
The honest summary is that each fiber has a different kind of footprint.
| Factor | Organic cotton | Recycled polyester |
|---|---|---|
| Raw material | Agricultural crop, grown without synthetic pesticides or GMO seed | Post-consumer plastic, often bottles |
| Main upside | Avoids mineral fertilizers, pesticides and GMO varieties, which can reduce ecosystem impacts | Can reduce a textile’s greenhouse-gas emissions compared with virgin fiber |
| Main concern | Farming and processing still use resources, and dyeing is a major footprint | Energy-intensive production and microplastic shedding in use |
| End of life | Pure cotton does not shed plastic fibers | Sheds microplastic fibers; hard to recycle again when blended |
The German Environment Agency’s 2024 assessment of textile fibers reaches this same balance. Organic cultivation can lower ecosystem impacts by avoiding mineral fertilizers, pesticides and GMO varieties, while recycled polyester can cut textile greenhouse-gas emissions, even though polyester production needs a lot of energy and water and synthetic fibers contribute to microplastic pollution (Umweltbundesamt, 2024).
The factory matters as much as the fiber
NRDC’s fiber-selection guide makes a point that most comparison pages skip: manufacturing processes can have an equal or greater environmental impact than the choice of material, and dyeing is the largest footprint in textile manufacturing (NRDC). The same guide says the impact of fabric production depends on how efficient the dyeing and finishing are, not only on the fiber type.
In practice, this means two organic cotton tees can have very different footprints, and so can two recycled polyester jerseys. When you compare options, ask about the dye house, the finishing and where the garment is made, not just the fiber on the tag.
Be wary of one-number claims
You will see comparisons that quote a single figure, such as liters of water per kilogram, to declare a winner. Cotton is a thirsty crop and polyester is not, but water is one input among many, and the figure changes with where and how the cotton is grown. A brand that wants to be credible should describe what it actually did (certified organic fiber, a stated percentage of recycled content) and leave sweeping verdicts to others.
Comfort, performance and durability
Here the two fibers separate clearly.
Moisture. Cotton absorbs moisture quickly. Cotton Incorporated’s TransDRY brochure says traditional cotton fabrics can saturate fast and retain as much as 20 to 40% more moisture than synthetic fabrics (Cotton Incorporated, TransDRY). That is fine for a coffee run or a day at the office, and less ideal for a long run. The same brochure describes specially engineered cotton fabrics that wick as well as many synthetics, so a finished cotton garment’s performance also depends on construction and finishing.
Shape and wear. Polyester resists abrasion and holds its shape, which is why it is the default for jerseys, track jackets and anything that gets washed weekly. Cotton is softer against the skin and feels more familiar in a tee or hoodie, but it can shrink or wrinkle if it is not well manufactured or cared for.
Practical split. A simple rule works for most product lines:
- Organic cotton: T-shirts, hoodies, crewnecks, sweatpants, loungewear, kidswear, garment-dyed basics.
- Recycled polyester: activewear, running and gym clothing, team uniforms, outerwear and anything that needs to dry fast.
- Blends: useful for some products, but they change the end-of-life picture, covered below.
Care and drying
Cotton dries more slowly, and polyester generally dries quickly and resists wrinkles. Odor is the one place where the answer is not simply “polyester is worse”: it depends on the fabric’s construction and treatment. If you ship garments with care labels, spell out the wash temperature and drying method, because that is where most shrinkage and wear complaints start. For a practical refresher on washing, drying, wrinkles and odor in everyday clothing, this guide to caring for costumes covers the same basics your customers will ask about.
What happens when the garment is retired
End of life is the weakest point for both fibers, and it is worth knowing before you promise anything.
The U.S. EPA reports that 17 million tons of textiles were generated in 2018 and only 14.7%, or 2.5 million tons, were recycled (EPA). That is an all-textiles figure, not a rate for either of our two fibers. A 2022 peer-reviewed assessment of the U.S. circular-economy landscape found that less than 1% of collected textiles go to fiber-to-fiber recycling. It adds that mechanical recycling suits mono-fiber materials best, that blended garments are hard to recycle, and that shortened fibers can lose strength and softness (Frontiers in Sustainability, 2022).
What this means for design:
- Keep garments mono-fiber where you can. A 100% organic cotton hoodie or a 100% recycled polyester jersey has better recovery prospects than a blend.
- Think about trims, labels and prints. Dyes, finishes and decoration also affect what can be done with the garment later.
- Design for a long life. Greenpeace’s analysis argues that brands should make fewer, better-quality clothes that last and can be repaired and reused (Greenpeace). A tee people wear for years beats a more “sustainable” fiber that gets thrown out after one season.
Certifications and claims for U.S. buyers
If you tell customers a garment is organic or recycled, the claim has to hold up. Two layers apply: third-party standards and the FTC’s guidance on environmental marketing.
For organic cotton. The Organic Trade Association recommends third-party certification under USDA National Organic Program rules, GOTS, or Textile Exchange’s Organic Content Standard. It also distinguishes a certified organic product claim from a narrower, verified claim about organic fiber content (Organic Trade Association). Practically, “made with organic cotton” and “certified organic garment” are not the same sentence.
For recycled polyester. Textile Exchange’s Global Recycled Standard requires third-party verification of recycled content and chain of custody. It applies to products with at least 20% recycled material, and product-specific consumer labeling is allowed only at 50% or more recycled content. GRS also adds social, environmental and chemical requirements (Textile Exchange).
For your marketing copy. The FTC’s Green Guides summary says that when a product is only partly recycled, the claim should identify the qualifying percentage. Recyclability claims should not imply that consumers have access to recycling facilities that do not exist (FTC). So write “made with 50% recycled polyester” rather than “eco fabric,” and avoid “fully recyclable” unless you can back it.
How to choose for your brand
NRDC’s advice is the cleanest decision rule: pick the fiber that meets your aesthetic and performance requirements first, then choose the lowest-impact version of that fiber (NRDC). Another way to say it: “green” is not one category, and the right answer follows from your goals and how the finished product performs (KARCEM).
Work through these questions in order:
- What will the customer do in it? Sitting, walking and lounging point to cotton. Sweating, running and training point to recycled polyester.
- How often will it be washed? Heavy wash cycles favor durable synthetics, though polyester sheds fibers when washed.
- What is your brand story? A natural, soft, garment-dyed look suits organic cotton. A technical, team or performance story suits recycled polyester.
- What can you prove? Choose the fiber where you can get certification and documentation, and state it plainly.
- How will it be decorated? Print method and fabric need to match.
Matching fabric to print method
Fabric choice shapes how the decoration behaves. Cotton is the classic base for DTG and screen printing. Performance fabrics need extra care so that ink or transfer stays flexible and durable. If you are printing on technical fabric, our guide to performance fabric printing walks through the options, and our piece on eco-friendly screen printing covers lower-impact ink and process choices. If you are weighing cotton grades for a tee line, see ringspun versus open-end cotton. For the full print-side picture, read eco-friendly T-shirt printing for small brands.
Our view from the print floor
We print on both kinds of fabric every week in Downtown Los Angeles, and the pattern is consistent. Brands that start with the garment’s job end up happier than brands that start with a sustainability slogan.
For tees, hoodies, crewnecks and sweatpants, we point people to organic cotton. It prints beautifully, it feels like what customers expect from a premium basic, and it pairs naturally with garment dyeing, which is why we built Tekton Garment Dye into our process. For team and performance pieces, recycled polyester earns its place.
The thing we would tell every founder is that fiber is only half the story. Dyeing, finishing, local production and how the print is applied shape the final footprint and the final quality. Making everything in Los Angeles also means shorter supply lines, faster turnaround and no minimums on blanks, so you can test a fabric on a small run before you commit to a big one.
Christian
Start with the right blank
If you are leaning toward organic cotton, our blanks include an organic cotton crewneck, an organic cotton hoodie, organic cotton sweatpants and an organic garment dye long sleeve. There are no minimum order quantities on blanks, so you can sample first.
We then decorate in-house with DTG, DTF, screen printing, embroidery and embossing, and finish with private labels and woven labels so the garment looks like your brand from the inside out. You can start a project from our main page, or look at DTG pricing if your design is detailed and full color.
For brands building a full line, our private labeling and finishing pricing page lays out the label and finishing side of the job.
Common mistakes to avoid
- Calling a blend “recycled” without a percentage. The FTC expects the qualifying share to be stated.
- Using “organic” for the whole garment when only the fiber is certified. The distinction between a product claim and a fiber-content claim is exactly what the Organic Trade Association describes.
- Ignoring dye and finish. Per NRDC, this is where much of a textile’s footprint sits.
- Choosing cotton for a sweat-heavy product. It retains moisture and dries slowly, so match the fabric to the use.
- Promising recyclability. With under 1% of collected textiles going to fiber-to-fiber recycling, say what you do (durable design, take-back if you run one), not what you hope.
FAQ
Is 100% cotton the same as 100% organic cotton?
No. “100% cotton” describes fiber content only, while “organic” refers to how the cotton was grown and, if certified, to a third-party standard such as GOTS, OCS or USDA organic. Ask for the certificate and its scope, because a product claim and a fiber-content claim are different things.
Is recycled polyester better than virgin polyester?
It performs about the same, and NRDC says only a real expert could tell them apart. The advantage is on the raw-material side: it can lower a textile’s greenhouse-gas emissions. It still sheds microplastic fibers, so washing guidance and design for longevity still matter.
Which fabric is better for activewear?
Recycled polyester is the usual choice for activewear because it dries quickly and holds its shape. Cotton absorbs and retains more moisture, so it suits low-sweat use such as casualwear and loungewear.
Can I blend organic cotton and recycled polyester?
Yes, and blends are common, but they are harder to recycle at end of life, as the 2022 U.S. circular-economy assessment notes. If recovery matters to your brand, a mono-fiber garment is the stronger design. If performance matters most, a blend can be the right call; just state the actual percentages.
Sources
- Decathlon: The criteria of our ecodesign approach
- Umweltbundesamt: Ökologische Bewertung textiler Fasern (2024)
- NRDC: Fiber Selection, Understanding the impact of fibers
- Cotton Incorporated: TransDRY brochure
- U.S. EPA: Textiles, Material-Specific Data
- Frontiers in Sustainability: Textiles in a circular economy
- Textile Exchange: Global Recycled Standard
- Organic Trade Association: Best Labeling Practices for Textiles
- FTC: Environmental Claims, Summary of the Green Guides
- Greenpeace: Danger Zone
- KARCEM: Recycled and Sustainable Yarns
- Guide to caring for costumes