Solid & Striped The Iris Bikini Top
Lower-concern baseline for untreated swimwear, but no brand transparency on finishing treatments.
The Iris Bikini Top is a nylon swimwear piece with no known PFAS-heavy coatings. Solid & Striped makes no public PFAS claim and provides no material transparency documentation.
The better-graded swap
Patagonia
Patagonia Women's Bottom Turn Racerback Bikini Top
90/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyamide/nylon fabric
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Solid & Striped The Iris Bikini Top is made of, ingredients and materials
The Iris Bikini Top is constructed from polyamide (nylon), a synthetic fiber known for durability, stretch recovery, and chlorine resistance in swimwear applications. Nylon itself does not leach hazardous monomers like BPA in normal use. The hazard profile depends entirely on dyes, finishing treatments (including potential water repellents), and any elastane/spandex blend components, which are not detailed in standard product labeling.
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.
Heavy metals
Polyamide fabric typically uses reactive or disperse dyes; some azo dyes can release aromatic amines under sweat or UV exposure. No specific test data published for Solid & Striped products, but common in nylon swimwear unless certified azo-free.
Source, FDA ↗Formaldehyde / VOCs
Nylon dyes sometimes require formaldehyde resin fixatives to improve wash and wear fastness. No brand disclosure available; standard industry practice in untested budget-to-midmarket swimwear.
Source, ATSDR ↗Elastane degradation and off-gassing from synthetic blends
Spandex/elastane components in stretch swimwear can release volatile organic compounds (VOCs) during production or storage, especially in warm conditions. Risk is low during normal wear but relevant to indoor storage and initial product odor.
Microplastics
Nylon fibers shed microplastics during washing and wear, as documented in published environmental studies. Individual health risk from brief skin contact is minimal, but persistent laundering contributes to water pollution; not specific to this brand but inherent to material class.
Source, EPA ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Antimony trace residue in polyester-blend dyes
Antimony is a common catalyst in polyester synthesis but less relevant to pure polyamide. Not documented in Solid & Striped products and unlikely given nylon base material, though elastane blends may contain trace residues.
The full breakdown
The brand's record and disclosure
Solid & Striped provides minimal transparency on chemical treatments, dye sourcing, or third-party certifications such as OEKO-TEX or GOTS. No significant safety recalls or regulatory actions are on public record for this brand. The brand's silence on PFAS-based water-repellent finishes is typical of mid-market swimwear manufacturers but leaves treatment composition unclear.
How it compares in its category
Polyamide swimwear is standard and generally lower-risk than some alternatives; it avoids PVC and plastisol coatings used in budget alternatives. Competitors like Speedo and higher-transparency brands (e.g., Patagonia) offer similar nylon construction with marginally better chemical disclosure. Solid & Striped occupies the mid-market tier where chemical transparency is inconsistent across the category.
If you buy it
Rinse thoroughly after saltwater or chlorinated water exposure to remove residual chemicals and extend fabric life. Wash in cool water with mild detergent; avoid bleach and high heat drying, which can degrade elastane components and release volatile compounds. Replace when elastic fails or seams separate, typically after 50-100 wears depending on care. Store dry in a breathable bag to prevent mildew.
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
- Solid & Striped has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Swimwear
Patagonia
Women's Bottom Turn Racerback Bikini Top
- Nylon/polyester blend with elastane (standard swimwear)
- The brand calls it PFAS-free, which we have not verified
- Elastane (spandex) degradation under heat or chlorine
More swimwear 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.