Pulse Performance Insoles vs Women's Slim Fit Insoles: which is safer?
PowerStep Pulse Performance Insoles is our pick: better on PFAS and on the overall hazard picture.
Our pick
Powerstep
Pulse Performance Insoles
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes in fabric blend
PossibleFormaldehyde resins in fabric finishing
Vionic
Women's Slim Fit Insoles
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleVolatile Organic Compounds (VOCs) from foam off-gassing
PossibleDegradation and microparticle shedding over time
PossibleBacterial or fungal growth if moisture retained
Where these two actually differ
- We flag Azo dyes in fabric blend and Formaldehyde resins in fabric finishing on the Powerstep and not on the Vionic.
- We flag Volatile Organic Compounds (VOCs) from foam off-gassing, Degradation and microparticle shedding over time and Bacterial or fungal growth if moisture retained on the Vionic and not on the Powerstep.
- The Powerstep is EVA foam, gel, fabric blend where the Vionic is foam cushioning, fabric topcover, 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: 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 synthetic athletic insoles & orthotics: see the full ranking