MANUFACTURING

Clothing Manufacturer for Brands

What plastic-free manufacturing actually requires and why most "sustainable" fabric is still plastic.


Jan 1, 2026

California AB 1817 ban on intentionally added PFAS in apparel and textiles takes effect. New York, Washington, Colorado, Vermont, Connecticut, Minnesota, and Maine follow through 2029. Source: California Legislative Info · AB 1817

54%

Polyester's share of global fiber production. Global fiber production reached 124 million tonnes in 2023, and polyester dominance is the structural gap bio-based performance fabric is built to close. Source: Textile Exchange · Materials Market Report 2024

700,000+

Microplastic fibers released from a single 6 kg synthetic laundry wash in peer-reviewed shedding studies. The core reason recycled polyester is not a plastic-free answer for direct-skin-contact garments. Source: Napper & Thompson · Marine Pollution Bulletin (2016)

What makes a clothing manufacturer actually plastic-free?

The fiber, and nothing else. Recycled polyester is still plastic. "Eco" and "vegan" finishes are often plastic. A recycled-content certificate proves recycling, not the absence of plastic. If you are going to put a plastic-free claim on your hangtag, the only thing that supports it is the regulated fiber-content label reading 100 percent of something that was grown, raised, or plant-derived.

This matters more at your size than at any other. A plastic-free claim gets scrutinized by retailers, regulators, and increasingly by customers who read labels, and a claim you cannot substantiate becomes a greenwashing liability. The manufacturer's job is to make the claim true at the fiber level and provable in a lab, not to hand you a story. For the consumer-facing version of this argument, our sister guide covers what plastic-free clothing means and why polyester is plastic.

Is recycled polyester plastic-free?

No, and this is the single most common thing brands get wrong. Recycled polyester (rPET) is the same polyethylene terephthalate polymer as virgin polyester, spun from reclaimed bottles or textiles instead of fresh petroleum. It is a genuine improvement on virgin feedstock and waste, which is exactly why GRS certification exists to verify it, but GRS is a recycling claim, not a plastic-free claim. Recycled polyester still sheds microplastic fibers through wear, washing, and drying, and it still does not biodegrade. The same is true of recycled nylon (Econyl). If plastic-free is the goal, recycled synthetics move you sideways, not toward it.

Which fabrics can a plastic-free program actually use?

There are four honest routes, and each has a real trade-off. The comparison below gives verdicts consistent with our 50-fiber materials glossary. No fabricated numbers; the performance column is qualitative because real performance depends on knit, weight, and finish, not the fiber name alone.

Fiber route Plastic-free? Performance profile Best for
Natural plant (organic cotton, linen, hemp) Yes Breathable, biodegradable, no stretch or wicking on their own Basics, tees, wovens, loungewear
Natural animal (merino wool, silk, alpaca) Yes Thermoregulating, odor-resistant, natural loft; premium input cost Base layers, knitwear, performance wool
Regenerated cellulose (Tencel lyocell, modal, cupro) Yes, semi-synthetic Silky drape, moisture-managing; plant cellulose in a closed solvent loop, not petroleum Intimates, drapey wovens, blended jersey
Recycled polyester / nylon No, still plastic Full synthetic performance, but sheds microplastics and does not biodegrade Not a plastic-free route; a recycled-content route

The gap that box exposes is stretch. Naturals and cellulosics cover most of a plastic-free line, but conventional stretch comes from elastane, which is plastic, so a leggings or swim program has no plastic-free path on the standard fiber menu.

How do you verify a plastic-free manufacturing claim?

Read the label, then verify the paper, then test the batch. Concretely:

  • Fiber content, per style. The regulated content label is the claim. Any polyester, nylon, polyamide, elastane, spandex, acrylic, or polypropylene listed means plastic. Ask for the exact composition on every style, not a blanket brand statement.
  • Certificate numbers, verified in the issuer's database. Organic content via GOTS or OCS, recycled content via GRS, and chemistry via OEKO-TEX all carry certificate numbers you can look up independently. A certificate you cannot verify is a logo, not a proof.
  • A lab report on the production batch, not the sample.
  • PFAS and finishing chemistry.

What does a plastic-free program cost versus conventional?

Polyester is the cheapest input in the category, which is exactly why every competitor has the same fabric and the same undifferentiated story. Natural-fiber and regenerated-cellulose programs price closer to conventional depending on the fiber.

How do you vet us before committing a season?

Start with paper, then people, then product. Ask for the spec pack and verify the certificate numbers against the issuer databases. Get on a call with me and JJ and ask the operational questions your last factory failed on. That sequence protects your claim, and it protects us.

Frequently asked questions

Is recycled polyester a plastic-free option?

No. Recycled polyester is still polyethylene terephthalate, the same plastic as virgin polyester, just sourced from reclaimed bottles or textiles. GRS certification verifies the recycled content claim, not a plastic-free claim, and recycled polyester sheds microplastics through wear and washing like any polyester. A genuinely plastic-free program uses natural fibers or closed-loop regenerated cellulose instead.

How do I verify a plastic-free manufacturing claim?

Read the regulated fiber-content label, not the marketing. Any listed polyester, nylon, polyamide, elastane, spandex, acrylic, or polypropylene means plastic content. A manufacturer that cannot state the exact fiber composition and back it with a verifiable test is not one you can trust with a plastic-free claim on your hangtag.

What does a plastic-free program cost compared to conventional synthetics?

Polyester is the cheapest input in the category. Natural-fiber and regenerated-cellulose programs price closer to conventional depending on the fiber.

How do I start a program with Ohzehn?

Email hello@ohzehn.com with the category, target quantities, and launch window, or book an intro call.

Related manufacturing programs

The category programs are activewear, intimates, lingerie, swim, and basics.