Bio-Based Nylon for Activewear: Chemistry, Sourcing, MOQ

1. What "bio-based nylon" actually means at the chemistry level

Nylon is polyamide. Every nylon polymer is a chain of amide bonds connecting monomer units. Conventional nylon 6 uses caprolactam derived from petroleum. Conventional nylon 6.6 uses hexamethylenediamine and adipic acid, both petroleum-derived. Both chemistries have dominated activewear for six decades because they combine tensile strength, elastic rebound, and dye-take in a single fiber family.

Bio-based nylon replaces the petroleum monomer with a plant-derived monomer. The commercial answer at scale in 2026 is PA6.10, produced by pairing hexamethylenediamine with sebacic acid, where the sebacic acid is derived from castor oil. That single swap makes the polymer roughly 62 percent bio-based by mass. When the fiber is then knit with bio-based stretch and dyed through certified low-impact chemistry, the finished fabric composition on OHZEHN-TEX™ lands at 99.5 percent plant-derived. The residual 0.5 percent holds space for stretch chemistry where fully bio-based equivalents are not yet commercially finalized.

PA6.10 is the same chemistry Fulgar uses in its EVO fiber line. It is not lab-scale. It is a fiber family that has been in commercial production for over a decade, primarily in Italy and China. OHZEHN-TEX is not asking a brand to bet on a novel polymer; it is a proven chemistry paired with a proven Fuzhou manufacturing base.

2. Why PA6.10 for activewear specifically

Not every "bio-based" performance fiber is right for activewear. Chemistry family drives end use. Three attributes matter for activewear, and PA6.10 wins on all three.

• Stretch and rebound. Compression leggings need a fiber that snaps back after a stretch cycle without permanent elongation. Polyamide rebound is measurably higher than bio-polyester rebound. OHZEHN-TEX targets 95 percent rebound recovery on standard construction.
• Compression retention. A high-compression leggings program stretches out at the knee within weeks if the base fiber is not right. PA6.10 holds compression through the wear-and-wash cycle in a way PBS-family polymers do not, not yet.
• Opacity at low GSM. Bio-nylon delivers face density with less mass than bio-polyester, which matters for premium-positioning brands specing 220 GSM leggings that still pass the squat test.

For a full head-to-head between OHZEHN-TEX (bio-nylon) and Kintra (bio-polyester), see the OHZEHN-TEX vs Kintra comparison.

3. PA6.10 vs bio-polyester (PBS/PBST) at the construction level

4. Sourcing bio-based nylon in 2026

Three commercial routes exist for bio-based nylon at production scale.

1. OHZEHN-TEX™ (China + US operating entity). Bio-nylon fabric production runs through four Fuzhou factories. US operating entity in Pennsylvania handles sample distribution, account service, and hangtag program administration. Compresses sampling and communication vs Italy-based or Brazil-based competitors. Ingredient-brand hangtag program is unique to this route.
2. Fulgar EVO (Italy). Same PA6.10 chemistry family, Italian yarn spinning. Distribution weighted toward Italian and European knitters. Historically stronger in hosiery, legwear, and premium-lingerie channels than in the American activewear stack. Euro-priced. Well-known in European fabric fairs.
3. Solvay Amni Soul Eco (Brazil). Different play, not bio-based. Petroleum-derived PA6.6 with a biodegradation additive that allows anaerobic-landfill breakdown in roughly five years. Brazil-based, weak US warehouse presence, sold through Brazilian mill partners. Fits programs where end-of-life is the single non-negotiable and bio-based feedstock is not.

For US-based brands running the $20M to $500M activewear category, OHZEHN-TEX's combination of PA6.10 chemistry, Fuzhou manufacturing base, US operating entity, and ingredient-brand hangtag is the fastest path from spec to first PO. The Fuzhou factories were built to serve the compliance bar of major US retail buyers under the prior operations of co-founder JJ Chen's family. Ohzehn is the new operator on top of that infrastructure.

5. MOQ, pricing, and lead times

Real numbers. OHZEHN-TEX bio-based nylon fabric ships at the following terms:

• MOQ: 5,000 yards per color per construction.
• Baseline price: $15.50 per yard at 220 GSM.
• GSM range: 150 to 320 GSM. Lighter fabrics land below the baseline; heavier and compression fabrics land above.
• Lead time: approximately 60 days from confirmed spec, subject to bio-based feedstock availability windows.
• Samples: swatch and one-yard panels available before any commit.

Full pricing chart, sampling turnaround, and hangtag program terms are on the bio-based nylon MOQ and pricing page. Competitors in the bio-based nylon category rarely publish pricing at all; we publish because founders shopping this category are tired of "let's schedule a call" as an answer to "what does it cost."

6. Coexistence with LYCRA and Creora, not replacement

A common founder question: does bio-nylon replace elastane? Not on its own. Elastane (LYCRA) is a stretch-specific fiber that delivers the 400 to 700 percent elongation that spandex-heavy garments rely on. Bio-nylon replaces the base yarn, not the stretch yarn.

Lycra EcoMade (recycled elastane, still petroleum-based) and Hyosung Creora Regen (recycled spandex, not bio-based) coexist with bio-nylon in the same construction if a brand is running a phased transition. Position them as the recycled-content upgrade to conventional spandex, not as plastic-free. A fabric with any spandex or elastane, EcoMade or otherwise, is not plastic-free at the strict definition. Bio-based stretch chemistry is the frontier, and it is where the residual 0.5 percent in OHZEHN-TEX composition sits today.

7. Certification scope for bio-based nylon on OHZEHN-TEX

Two certification stacks, disclosed by scope.

Held by the four Fuzhou factories: OEKO-TEX Standard 100 Class II, GRS v4.0 verified by Control Union, ZDHC member, SAC member, PVH-accredited in-house testing lab, Bureau Veritas third-party verification. Production meets REACH, SVHC, POP, and GB 18401. That is the compliance floor for any fabric that leaves the mill.

Held by the OHZEHN-TEX™ plant-derived fabric itself: the ingredient's own OEKO-TEX and GRS certifications are in progress. Independent third-party chemistry verification is available now through the Miami testing lab. Third-party biodegradation certification is pending. Full detail plus verification instructions on the credentials page.

8. Applications this fabric ships into

• Activewear: leggings, sports bras, performance tees.
• Intimates: seamless bras, bralettes, shapewear.
• Swim: swim bottoms, one-pieces, board shorts.
• Basics: premium base layers, essentials, stretch tees.
• Lingerie: bralettes, slips, sets.

9. Frequently asked questions