Lululemon · Sports Performance Undergarments
lululemon Always In Motion Boxer 5
Lululemon silent on PFAS; water-repellent coating treatment raises concern.
This nylon boxer features a durable water-resistant finish. Lululemon stays silent on PFAS and water-repellent coating chemistry, though water-repellent finishes commonly use PFAS.
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Material
nylon blend with water-repellent coating finish
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.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Nylon water-repellent coating finishes historically use long-chain PFAS; Lululemon's current formulation is undisclosed. Short-chain PFAS or non-fluorinated alternatives exist but cannot be confirmed for this product without brand clarification. Risk is inhalation exposure during manufacturing or wear, and persistence in soil/water if garment is discarded.
Source, ATSDR ↗Elastane (spandex) degradation and microfiber shedding
Spandex components degrade with heat, chlorine, and UV exposure, accelerating microfiber release during washing. The 12% elastane in this blend makes it susceptible to microfiber loss, particularly if tumble-dried at high heat or exposed to pool chemicals. This is not specific to Lululemon but inherent to nylon-elastane athletic wear.
What’s reassuring
Formaldehyde / VOCs
No reports of formaldehyde resin finishes or formaldehyde-releasing dyes in Lululemon nylon apparel. Nylon-spandex blends do not inherently require formaldehyde; the risk would be in dyeing processes, which Lululemon does not appear to have flagged in testing or recalls.
Source, ATSDR ↗Heavy metals
No established reports of restricted azo dyes or heavy metal pigment contamination in this product or brand. Lululemon typically sources certified dyes, though full supply chain transparency is limited.
Source, FDA ↗Flame retardants
Athletic shorts are not typically treated with flame retardants unless marketed specifically for that purpose. No evidence of flame retardant application in the Always In Motion Boxer 5.
Source, EPA ↗The full breakdown
What it's made of and why it matters
The Always In Motion Boxer 5 is constructed from a nylon-elastane blend (likely 88% nylon, 12% spandex or similar ratio typical of Lululemon athletic shorts). The water-repellent coating (water-repellent coating) finish applied to the outer nylon surface is the primary chemical concern. water-repellent coating treatments historically relied on long-chain PFAS compounds; newer formulations may use short-chain PFAS or non-fluorinated alternatives, but Lululemon has not disclosed which process they use. Nylon itself is stable in normal wear and washing, but the finish is where chemical exposure risk concentrates.
The brand's record and disclosure
Lululemon does not publicly disclose water-repellent coating treatment chemistry or commit to PFAS-free standards for most product lines, despite industry movement toward transparency. The brand has faced scrutiny from environmental groups over chemical opacity but has not issued recalls or warnings specific to this product. No established formaldehyde, azo dye, or antimony contamination has been reported in their nylon apparel. However, the silent stance on water-repellent coating chemistry contrasts with competitors (e.g.who now specify finishes with lower concern regarding PFAS or PFC compounds.
How it compares in its category
Athletic shorts in this price and performance tier commonly use nylon with water-repellent coating finish; the risk profile is typical rather than exceptional. Many mainstream brands (Nike, Adidas, Lululemon) have not yet committed to PFAS-free water repellency across all lines, though premium outdoor brands have begun the transition. The real differentiation is disclosure, Lululemon's refusal to specify treatment chemistry puts this product in a weaker transparency position than explicitly PFAS-free alternatives from smaller brands or premium outdoor companies.
If you buy it
Wash in cold water with mild detergent; avoid fabric softener, which can degrade water-repellent coating. Do not tumble-dry on high heat, as this can damage the nylon and potentially degrade the finish. The water-repellent coating will wear down after 20-30 washes; reapplication with commercial products may reintroduce PFAS, so consider line-drying and spot-cleaning to extend life. If environmental or health concerns about water-repellent coating chemicals matter to you, contact Lululemon directly requesting treatment-chemistry disclosure before purchase.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Lululemon has made none
Formulations change between production runs, so check the current label. How we grade.
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Azo dyes
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⚠Starting grade for this product type
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⚠Starting grade for this product type
More sports performance undergarments 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.