Splits59 Monah High Waist Rigor 7/8 Women's Leggings
Lower concern leggings; typical athletic fabric without known PFAS markers.
Splits59 Monah leggings are a nylon/spandex blend with no disclosed water-resistant or stain-resistant finish. Standard stretch athletic fabrics typically carry lower PFAS risk than treated performance apparel, though brand makes no explicit PFAS claims.
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Material
nylon/spandex blend, stretch fabric
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Splits59 Monah High Waist Rigor 7/8 is made of, ingredients and materials
These leggings are a nylon and spandex (elastane) blend, a standard construction for stretch athletic wear. Nylon provides durability and moisture-wicking; spandex enables the high-waist fit and recovery after movement. This combination is chemically stable during normal wear and washing, with no known leaching of monomers or degradation products into skin at body temperature. The blend itself carries minimal toxicological risk compared to untreated cotton or polyester blends.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Microplastic shedding during wear and washing
All synthetic athletic wear sheds microfibers during normal wear and washing, including nylon/spandex blends. This is an environmental concern (not direct health toxicity) and affects this legging as it does all similar garments; washing in cold water and using a microfiber-catching bag reduces shedding.
Allergic contact dermatitis from dyes or residual chemicals
Spandex can rarely trigger contact dermatitis in sensitive individuals, and residual dye or finishing agents may cause itching or rash on first wear. This is not specific to Splits59 but is documented across nylon/spandex apparel; prewashing before extended wear mitigates risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Azo dyes and colorant toxicity
No reports of restricted azo dyes or heavy metal contamination in Splits59 products. Nylon and spandex are routinely dyed with standard acid and disperse dyes; without independent testing or a recall, no hazard is documented for this legging.
Formaldehyde / VOCs
No evidence that this product uses formaldehyde-based resin finishes typical of wrinkle-resistant or permanent-press cotton blends. Nylon/spandex athletic wear rarely requires such finishing, reducing formaldehyde exposure risk.
Source, ATSDR ↗Antimony in polyester
While spandex is a polyurethane polymer, antimony (a catalyst in polyester synthesis) is not a typical contaminant in quality spandex fibers used for apparel. No antimony concerns are documented for this product class.
The full breakdown
The brand's record and disclosure
Splits59 does not publish detailed material transparency or third-party certifications (such as OEKO-TEX or bluesign) on this specific product line. The brand maintains a social media presence around sustainability messaging but provides no public disclosure of manufacturing standards, dye sourcing, or chemical testing results. No established recalls, safety violations, or controversies are on record for this brand in major safety databases. This silence on disclosure is typical for mid-market athletic brands but represents a gap in verifiable safety documentation.
How it compares in its category
Nylon/spandex blends are the industry standard for high-stretch leggings and carry similar risk profiles to competitors in this price and category segment (e.g., Alo Yoga, Lululemon). Unlike cotton-based or untreated polyester alternatives, this blend does not typically off-gas volatile organic compounds (VOCs) after production. The lack of visible coatings, special finishes, or flame-retardant treatments keeps chemical exposure lower than performance fabrics with antimicrobial or water-resistant finishes.
If you buy it
Wash in cool water and avoid prolonged heat (tumble drying on high or ironing) to prevent spandex degradation and potential micro-shedding over time. Do not bleach or expose to direct sunlight for extended periods, as UV can weaken elastic fibers and may alter dye chemistry. Replace when elastic loss becomes visible (typically 100-150 wears for high-quality blends) or seams show stress. Standard household washing with mild detergent poses no additional contamination risk beyond any athletic garment.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Splits59 has made none
Formulations change between production runs, so check the current label. How we grade.
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.