Wonder Nation · School Uniforms
Wonder Nation Girls School Uniform Pique Polo Shirt with Short Sleeves
Lower concern. Bare cotton pique with no reported treatments.
School uniform polo is untreated cotton pique, inherently PFAS-free. Walmart does not disclose finishing treatments; verify product tag for any coatings or finishes before purchase.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
100% cotton pique weave
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Wonder Nation Girls School Short Sleeves is made of, ingredients and materials
This shirt is 100% cotton in a pique weave, a textured knit that provides durability for repeated washing typical of school uniforms. Cotton fiber itself is cellulose and carries no inherent heavy-metal or synthetic chemical risk during wear. Pique construction (raised geometric pattern) is mechanical rather than chemical, so there is no resin binder or coating involved in the fabric structure.
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.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Azo dyes (carcinogenic dyes)
No evidence of restricted azo dyes in this product. US and EU textile standards prohibit the most hazardous azo compounds (those releasing banned amines); standard compliance is presumed for Walmart-sold children's apparel but not independently verified for this specific shirt.
Formaldehyde / VOCs
100% cotton pique typically requires no formaldehyde-based finishing because pique's texture is built into the yarn structure. No wrinkle-resistant or permanent-press coating is evident from product description.
Source, ATSDR ↗Heavy metals
Standard US children's apparel must meet CPSIA lead and cadmium limits. No screen-printed graphics are mentioned; if present, would be subject to same heavy-metal caps. No evidence of violation on record.
Source, FDA ↗Antimony in synthetic fibers
Antimony is a catalyst used in polyester production. This shirt is 100% cotton, so antimony exposure risk does not apply.
Flame retardants
School uniforms are not regulated as sleepwear and do not require flame-retardant treatments. No evidence of added flame retardants in standard cotton polo shirts.
Source, EPA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Walmart's house brand Wonder Nation does not publicly disclose detailed chemical testing or third-party certifications (e.g., OEKO-TEX, GOTS) for individual garments. No recalls or formal safety incidents have been published for this specific style. As a mass-market private label, the brand relies on standard textile compliance (banned azo dyes, heavy-metal limits under CPSIA) rather than premium transparency.
How it compares in its category
School polo shirts at this price point typically have minimal chemical processing; cotton pique is one of the least-treated fabric types in children's apparel. Higher-end uniform brands may offer OEKO-TEX or similar certification. Mass-market alternatives (Old Navy, Target Cat & Jack) occupy similar safety territory with comparable disclosure gaps.
If you buy it
Wash before first wear to remove any residual finishing agents or dust from manufacturing. Use standard detergent and warm water; cotton pique withstands frequent laundering without degradation. No special heat restrictions apply. Monitor for pilling after many wash cycles, which is cosmetic rather than a safety issue. Replace when seams fray or fabric thins, typically after 1-2 school years of regular use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Wonder Nation has made none
Formulations change between production runs, so check the current label. How we grade.
More school uniforms 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.