Old Navy Kids' School Uniform Jersey Polo Shirt
Lower concern. Bare cotton jersey unlikely to contain PFAS.
School uniform polo in plain cotton jersey with no water-repellent or stain-resistant treatment disclosed. Cotton is an inherently lower-PFAS-risk material, though no brand disclosure available.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
cotton jersey knit
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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 excess dye residue
Cotton jerseys are typically piece-dyed; while EU and US regulations restrict certain azo compounds, enforcement in children's apparel varies by manufacturer. No specific incident is on record for Old Navy polos, but pre-wash rinsing reduces migrating dye.
Microfiber shedding and microplastic persistence
All synthetic and natural textiles shed fibers during washing. Cotton sheds less than polyester but still contributes to microfiber load in wastewater. Washing in a mesh bag and using cooler temperatures reduces shedding.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Cotton jersey is not typically treated with formaldehyde finishes because wrinkle recovery is less critical for casual knits than for woven shirts. If any finish is present, it would be minimal and off-gasses quickly with washing.
Source, ATSDR ↗Heavy metals
No recalls or test reports document heavy metal contamination in Old Navy children's cotton basics. Standard commercial dyes used for cotton contain lead and cadmium at trace levels permitted by US textile regulations, but pose negligible skin contact risk.
Source, FDA ↗Flame retardants
Cotton jerseys are not treated with flame retardants; these are applied mainly to synthetic fabrics and sleepwear. Children's daywear like school polos is exempt from federal flammability standards.
Source, EPA ↗The full breakdown
What it's made of and why it matters
This is a cotton jersey knit, a lightweight, breathable fabric made by looping cotton yarns together rather than weaving them tightly. Jersey knits are inherently less processed than many synthetic alternatives, reducing exposure to chemical finishes and coatings. Cotton itself is a natural cellulose fiber and does not bioaccumulate toxins the way synthetic polymers can, though the farming and dyeing of cotton introduces separate environmental concerns.
The brand's record and disclosure
Old Navy (Gap Inc.) has published sustainability reports and has phased out some restricted chemicals, but does not prominently advertise third-party chemical certifications like OEKO-TEX or Cradle to Cradle for most children's basics. The Bienzle sub-brand attribution is not widely recognized in independent product safety databases, making it difficult to assess whether this represents a dedicated line or a rebranding. No major recalls or chemical contamination incidents are on record for Old Navy children's cotton polos.
How it compares in its category
Cotton jersey polos are among the lower-risk garment types compared to synthetic blends, water-resistant treated fabrics, or heavily dyed items. School uniform basics from mass retailers typically use minimal chemical finishing compared to performance or fashion-branded children's wear. This product sits in the middle-safety range for retail children's apparel, with no premium certifications but no known red flags either.
If you buy it
Wash before first wear in cool water to reduce loose dyes and residual processing chemicals. Machine wash warm or cold and tumble dry low; high heat can degrade elastic and accelerate microfiber shedding. Inspect seams and elastic cuffs annually for degradation, as these are stress points. Do not dry clean or bleach, as these add unnecessary chemical exposure.
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
- Bienzle 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.