Men's Intense Power Sport Tee vs Women's Swift Breathe Dri-FIT Running Tank Top: which is safer?
Calvin Klein Men's Intense Power Sport Tee is our pick, better on PFAS and on the overall hazard picture.
Our pick
Calvin Klein
Men's Intense Power Sport Tee
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and synthetic colorants
PossibleHeavy metals in pigments
PossibleFragrance allergens or residual chemical odors
Nike
Women's Swift Breathe Dri-FIT Running Tank Top
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
Likelywater-repellent coating (water-repellent coating) fluorochemical finish
PossibleFormaldehyde in dyes or finishing resins
PossibleCoating degradation and microplastic shedding over time
Where these two actually differ
- We flag Azo dyes and synthetic colorants, Heavy metals in pigments and Fragrance allergens or residual chemical odors on the Calvin Klein and not on the Nike.
- We flag Durable water-repellent (DWR) fluorochemical finish, Formaldehyde in dyes or finishing resins and Coating degradation and microplastic shedding over time on the Nike and not on the Calvin Klein.
- The Calvin Klein is Cotton-blend knit jersey, uncoated where the Nike is Polyester blend with Dri-FIT moisture-wicking finish, which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the Calvin Klein is the one to buy.
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 waterproof sports undergarments, see the full ranking