Medical RX Insole | Green vs Polysorb Cross Trainer Insole: which is safer?

Spenco Medical RX Insole | Green is our pick: better on PFAS and on the overall hazard picture.

Our pick

Spenco

Medical RX Insole | Green

PFAS grade

D 65/100

Overall grade

F 53/100

Verdict

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Hazard flags

⚑ 3

Material

Foam, rubber, textile composite insole

Confidence

72%

PossibleFoam degradation and microparticle shedding

PossibleAdhesive or bonding agent residues

PossibleMold or bacterial growth if not maintained

Why this grade

Spenco

Polysorb Cross Trainer Insole

PFAS grade

D 65/100

Overall grade

F 43/100

Verdict

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Hazard flags

⚑ 4

Material

Polysorb foam cushioning, composition not fully disclosed

Confidence

62%

PossibleFormaldehyde resins in textile covering

PossibleAzo dyes in fabric

ReportedFoam degradation and microparticle release

Why this 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