Solid & Striped Michelle Reversible One-Piece
Lower-concern swimwear, but lack of transparency on water-repellent coating treatments leaves modest uncertainty.
This reversible one-piece is primarily nylon/polyamide with no inherent PFAS risk. However, Solid & Striped doesn't publicly disclose whether the garment uses PFAS-based water-repellent coating finishes.
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
Nylon/polyamide blend swimwear
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Solid & Striped Michelle Reversible is made of, ingredients and materials
This is a nylon/polyamide blend one-piece, the dominant material for modern swimwear. Nylon itself is chemically stable and does not leach endocrine disruptors under normal use; however, the dyes and finishing treatments applied during manufacture are where chemical hazards concentrate. Reversible construction means two fabric surfaces that may have been treated differently, adding complexity to dye and finish safety.
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.
Azo dyes and colorant safety
Nylon swimwear is typically dyed with reactive or disperse azo dyes. No specific test results for Solid & Striped are public, but azo dyes may contain aromatic amines banned in some jurisdictions. Risk is low in finished product if dyes are properly fixed, but unknown for this brand.
Formaldehyde / VOCs
Textile finishes and dye-setting processes sometimes employ formaldehyde-releasing compounds. Solid & Striped does not disclose finishing chemistry. Formaldehyde off-gassing from swimwear is minimal after washing, but not ruled out.
Source, ATSDR ↗Water-repellent (water-repellent coating) treatment chemistry
Reversible swimwear may have water-repellent finishes on one or both sides. Solid & Striped does not disclose water-repellent coating agents; legacy treatments contained long-chain PFAS. Modern alternatives exist but are not confirmed here, contributing to the modest PFAS uncertainty already flagged.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
The reversible design suggests printed or multi-colored panels. Pigments for synthetic fabrics occasionally contain lead or cadmium if not regulated. No recalls or reports specific to Solid & Striped; standard industry practice in US-manufactured swimwear minimizes this risk.
Source, FDA ↗Antimony in polyester components
This product is primarily nylon, not polyester, so antimony catalyst residue is not a concern. Spandex elastic may trace antimony, but exposure from swimwear spandex is negligible.
The full breakdown
The brand's record and disclosure
Solid & Striped does not publicly disclose fabric suppliers, dye safety certifications, or water-repellent treatment chemistry. The brand maintains no published GOTS, Bluesign, or similar third-party textile safety credentials. No recalls or documented chemical safety controversies have been reported for Solid & Striped products. This silence on chemical inputs is typical for contemporary swimwear brands but leaves gaps in transparency.
How it compares in its category
Nylon swimwear is the industry standard and has lower concern than polyester-spandex blends, which can contain antimony residues. Solid & Striped positions itself as a premium contemporary label, not a sustainability-focused brand, so it does not claim special chemical controls. Functionally, reversible nylon performs well and matches peers in durability and fit.
If you buy it
Rinse thoroughly in fresh water after each use to remove chlorine, salt, and residual dyes. Avoid machine washing and high heat; hand wash in cool water with mild detergent. Sun-dry flat to prevent elastic degradation. Replace when elastic loses recovery or seams degrade, typically after 50-100 wears. Do not store wet or in direct sunlight for extended periods.
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.