Men's Liner Socks vs Active Full Insole: which is safer?

PUMA Men's Liner Socks is our pick: better on PFAS and on the overall hazard picture.

Our pick

Puma

Men's Liner Socks

PFAS grade

D 65/100

Overall grade

F 53/100

Verdict

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Hazard flags

⚑ 3

Material

Cotton blend (typical liner sock construction)

Confidence

72%

PossibleAzo dyes and synthetic dyes

PossibleFormaldehyde releasers in fabric finishes

PossibleElastane (spandex) off-gassing and volatilization

Why this grade

Vionic

Active Full Insole

PFAS grade

D 65/100

Overall grade

F 31/100

Verdict

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Hazard flags

⚑ 5

Material

Foam cushioning, textile upper

Confidence

72%

PossibleFormaldehyde resins in textile finishing

LikelyFoam degradation and microparticle shedding

PossibleAdhesive residues between foam and textile

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 athletic insoles & orthotics: see the full ranking