Womens No Boundaries Boyshort Super Absorbency Period Underwear
Skip until brand discloses waterproof treatment chemistry.
Super-absorbency period underwear typically requires water-resistant coatings; brand does not disclose treatment type or PFAS status. Unverified coating chemistry presents unknown risk.
The better-graded swap
Aisle
Aisle Essential High-Rise Period Brief, Leakproof Underwear Essential Brief Black / S
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
Cotton/polyester blend with unspecified waterproof/absorbency coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
Aqua Pure
3M Aqua-Pure AP802B Whole House Filter Housing
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product. See all of them.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product. See all of them.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product. See all of them.
What Womens No Boundaries Boyshort Super is made of, ingredients and materials
This product is a cotton-polyester blend with an unspecified waterproof or absorbency-enhancing coating. The cotton provides breathability and comfort, while polyester adds durability and stretch. The coating is the critical unknown, period-absorbent underwear typically requires either PFAS-based water-repellent finishes or newer PFAS-free alternatives like silicone or polyurethane dispersions. Without the brand naming the coating chemistry, it is impossible to assess whether PFAS or other chemical leachables are present.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
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.
Coating degradation and microplastic shedding
Period underwear coatings degrade with repeated washing. As the waterproof layer breaks down, microfibers and coating particles may shed into wash water. Without knowing the coating composition, risk of synthetic polymer or chemical release on degradation cannot be quantified.
Contact dermatitis or sensitization from undisclosed coating or finish
Any waterproof coating can irritate sensitive skin, especially in prolonged contact with vulvar tissue. Risk depends entirely on coating chemistry, which remains unknown. Individuals with textile sensitivities should patch-test or choose brands that disclose chemical composition.
What’s reassuring
Formaldehyde / VOCs
No specific recalls or test reports for this product line. Cotton-polyester blends used in mainstream underwear typically comply with OEKO-TEX limits in US retail; however, without third-party certification listed, no independent verification is on record.
Source, ATSDR ↗Polyester antimony catalyst residue
Antimony is a byproduct of polyester synthesis and typically remains in fiber at trace levels. No specific antimony concerns have been flagged for this product, and levels in apparel are generally considered low concern by regulatory standards.
Fragrance or finish additives in absorbent layers
No fragrance or antimicrobial agent claims appear on product labeling. Typical period underwear does not list fragrance; however, undisclosed additives in absorbent gel or binding resins are possible but not documented for this brand.
The full breakdown
The brand's record and disclosure
No Boundaries (Walmart's in-house brand) has not publicly disclosed the waterproof treatment chemistry for this product or issued transparency statements about PFAS use in period care lines. No third-party certifications (OEKO-TEX, GOTS, Cradle to Cradle) are listed on product documentation reviewed. The brand's silence on this known issue in category is a red flag for informed purchasing.
How it compares in its category
Period underwear markets now include explicitly PFAS-free brands (Aisle, Thinx, Knix, Proof) that disclose their coating chemistry, as well as traditional brands that remain opaque. No Boundaries' lack of disclosure puts it at the transparency-low end. At its price point, competitors often match material quality but some offer better chemical accountability or lower PFAS likelihood based on stated treatments.
If you buy it
Wash in cold water before first use to reduce any surface residue. Avoid bleach or high heat (dryer on high may degrade the coating and create microplastic shedding). Replace every 1-2 years or when absorbency or waterproof integrity visibly declines. If possible, request product documentation from Walmart or the brand specifying the coating type; absence of response strengthens the case to switch brands on subsequent purchase.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Boyshort has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Period Underwear
Ruby Love
Rubylove First Period Kit +teen Period Underwear
- organic cotton, waterproof backing layer
- A third party reports verifying it as PFAS-free
- Coating degradation and microparticle shedding
2 hazards checked on this product. See all of them.
Lunapads
3-Pack BOOST Brief
- organic cotton blend, water-resistant gusset
- The brand calls it PFAS-free, which we have not verified
- Microplastic shedding from water-resistant barrier
Aisle
Super Hipster
- Organic cotton, wood pulp fiber
- The brand calls it PFAS-free, which we have not verified
- Azo dyes and synthetic dyes
2 hazards checked on this product. See all of them.
More period underwear 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.