NWT Koral Lustrous Infinity High Rise Legging
Moisture-wicking leggings likely treated with water-repellent coating. No PFAS disclosure from brand.
Koral does not publicly disclose PFAS use or absence in this product. High-performance athletic leggings typically use water-repellent coating finishes that may contain PFAS. No third-party verification available.
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Material
Nylon blend with unspecified water-resistant treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
PFAS
Water-resistant treatment is nearly certain to contain fluorinated compounds unless explicitly stated otherwise. Koral provides no chemical disclosure. PFAS can persist in the body and environment; exposure during wear is low, but washing and end-of-life disposal pose concerns.
Source: ATSDR ↗Microplastic shedding
All synthetic fiber textiles shed microfibers during washing. Nylon leggings are no exception. Use a microfiber-catching laundry bag to reduce environmental release; this does not eliminate shedding but limits washwater contamination.
What’s reassuring
Azo dyes
Koral has not been linked to azo dye violations or campaigns. Nylon dyeing sometimes uses restricted azo compounds in low-cost manufacturing, but no specific issue is documented for this brand.
Formaldehyde / VOCs
Nylon blends rarely require formaldehyde-based finish resins; the hazard is low for this material class. No reports of formaldehyde issues in Koral apparel are on record.
Source: ATSDR ↗Antimony in polyester
This product is nylon-based, not polyester. Antimony catalyst use applies to polyester production, not nylon, so this hazard is not relevant.
The full breakdown
What it's made of and why it matters
This legging is nylon blend (polyamide), a synthetic polymer chosen for stretch, durability, and moisture-wicking in activewear. The "water-resistant" finish is almost certainly a water-repellent coating (water-repellent coating) treatment applied to the fabric surface. Nylon itself is chemically stable during wear, but water-repellent coating treatments historically rely on fluorinated compounds (PFAS) to work effectively. Without Koral's explicit material disclosure, the specific chemistry of this treatment is unknown.
The brand's record and disclosure
Koral does not publicly disclose PFAS use, water-resistant treatment chemistry, or pursue certifications like GOTS, Bluesign, or Fair Wear Foundation auditing. The brand maintains minimal transparency on chemical inputs in manufacturing. No recalls or documented chemical safety controversies are on record for Koral apparel, but silence on water-repellent coating formulation is the industry norm for athletic brands and reflects low priority on fluorine-free alternatives.
How it compares in its category
Most performance leggings in this price and brand tier use non-disclosed water-repellent coating finishes; Koral sits in the standard opacity range. Brands like Patagonia and some Lululemon lines now offer PFAS-free water-repellent coating or accept reduced water resistance. Nylon-blend construction is typical. This product offers no material advantage in safety transparency compared to peers.
If you buy it
Wash in cold water with mild detergent to minimize water-repellent coating breakdown and microfiber shedding; avoid fabric softeners and heat drying. Do not bleach or dry clean. Expect the water-resistant finish to degrade after 20-30 washes; performance loss is normal and not a sign of defect. Nylon is durable and does not require special storage, but inspect seams annually for pilling or fraying. If PFAS exposure is a concern, this product carries inherent uncertainty.
What we don’t know
- Basis
- Model estimate, 42% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Koral has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Activewear
Fabletics
Women's Oasis PureLuxe High-Waisted Pocketed Kick Flare
polyester blend fabric, standard construction
Azo dyes and synthetic colorants
Limited concern
Formaldehyde / VOCs
Limited concern
Microfiber shedding from synthetic blend
Moderate concern
Lower concern. Unsupported fabric unlikely to carry high PFAS risk.
⚠Risky category by default
Fabletics
Women's Live-In High-Waisted Leggings
Polyester/nylon blend, standard athletic apparel
Azo dyes and synthetic colorants
Limited concern
Antimony in polyester
Limited concern
Phthalate plasticizers in elastane/spandex
Limited concern
Microfiber shedding
Moderate concern
Lower concern. Standard athletic leggings without water-repellent coating.
⚠Risky category by default
Fabletics
Women's Define PowerHold High-Waisted 7/8 Leggings
polyester/nylon blend with elastic
Formaldehyde / VOCs
Limited concern
Azo dyes and colorfast quality
Limited concern
Microplastics
Moderate concern
Elastic degradation and allergenic contact
Limited concern
Lower concern; basic synthetic athletic wear without known PFAS triggers.
⚠Risky category by default
More activewear grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.