Anytime Bralette Light Grey Xs vs Women's Interval Sports Bra: which is safer?
Allbirds Anytime Bralette Light Grey Xs is our pick, better on PFAS and on the overall hazard picture.
Our pick
Allbirds
Anytime Bralette Light Grey Xs
PFAS grade
Good 65/100
Overall grade
Good 59/100
Verdict
Skip
Hazard flags
⚑ 1
Material
Organic cotton blend with TENCEL lyocell
Confidence
72%
PossibleElastane (spandex) degradation and leaching under heat
Athleta
Women's Interval Sports Bra
PFAS grade
Good 65/100
Overall grade
Poor 43/100
Verdict
Skip
Hazard flags
⚑ 4
Material
nylon, spandex blend; no water-resistant treatment disclosed
Confidence
72%
PossibleAzo dyes and heavy metal pigments in textiles
PossibleFormaldehyde resins in fabric finishing
PossibleResidual monomers and plasticizers from spandex synthesis
Where these two actually differ
- We flag Elastane (spandex) degradation and leaching under heat on the Allbirds and not on the Athleta.
- We flag Azo dyes and heavy metal pigments in textiles, Formaldehyde resins in fabric finishing, Residual monomers and plasticizers from spandex synthesis and Microfiber shedding during washing on the Athleta and not on the Allbirds.
- The Allbirds is Organic cotton blend with TENCEL lyocell where the Athleta is nylon, spandex blend; no water-resistant treatment disclosed, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More sports bras, see the full ranking