Does Vionic synthetic athletic insoles & orthotics have PFAS?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
We graded 8 Vionic synthetic athletic insoles & orthotics products, averaging Good (65/100). None of them grade Good or better.
Graded and flagged Poor and Bad, we’d swap these
Vionic
Women's Slim Fit Insole
foam, gel, or textile insole construction
Formaldehyde / VOCs
Insole fabric tops may contain formaldehyde-based durable-press finishes to reduce…
Azo dyes in top fabric
If the textile cover is dyed dark colors, azo dyes may be present. Skin contact with…
Microbial and fungal growth in foam
EVA foam absorbs moisture from foot sweat. If insoles are not dried regularly, bacteria…
Insole material is inherently lower PFAS risk; no brand disclosure found.
⚠Risky category by default
Vionic
Active Full Insole
Foam cushioning, textile upper
Formaldehyde / VOCs
The textile upper may contain formaldehyde-releasing finishes used to improve wrinkle…
Foam degradation and microparticle shedding
Polyurethane and EVA foams naturally fragment under repeated compression and flexing.…
Adhesive residues between foam and textile
Insole construction typically uses industrial adhesives to bond foam to the textile…
Azo dyes in textile coloring
If the textile upper is dyed, azo dyes (used in many textiles) can theoretically release…
Lower concern; typical insole without known PFAS drivers.
⚠Risky category by default
Vionic
Unisex Active Orthotic Full Length Insole
EVA foam, fabric backing, polyurethane adhesive
Polyurethane adhesive degradation and skin contact
Polyurethane adhesives used to bond insole layers can degrade over time or in…
Microplastics
Repetitive compression and foot friction can cause gradual particle shedding from EVA…
Lower concern insole; common foam materials without waterproofing treatment indicated.
⚠Risky category by default
Vionic
Relief 3QTR Insole
foam, gel, or fabric cushioning
Azo dyes in fabric topcoat
Insole fabric may contain azo dyes, which can release harmful amines if degraded or…
Polyurethane foam degradation and off-gassing
Polyurethane foam can off-gas volatile organic compounds (VOCs) when new, particularly in…
Insole materials unlikely to contain PFAS, but Vionic provides no disclosure.
⚠Risky category by default
Vionic
Women's Active Full Length Insole
EVA foam, arch support structure
Phthalates
Standard EVA does not require phthalates, but some manufacturers add them to improve…
Lower concern for typical EVA insole; no PFAS disclosure needed.
⚠Risky category by default
Vionic
Orthotic
Foam insoles, synthetic upper, textile lining
Foam degradation and particulate release
Polyurethane foam degrades with age and moisture, shedding fine particles into socks and…
Orthotic footwear poses lower concern absent waterproof treatment disclosure.
⚠Risky category by default
Vionic
Women's Slim Fit Insoles
foam cushioning, fabric topcover
Volatile Organic Compounds (VOCs) from foam off-gassing
Synthetic foam insoles (EVA/polyurethane) release low levels of VOCs during manufacturing…
Degradation and microparticle shedding over time
Foam insoles degrade with wear and sweat exposure, potentially releasing small particles.…
Bacterial or fungal growth if moisture retained
Foam absorbs sweat; improper drying or storage can harbor odor-causing bacteria or fungi.…
Lower concern, but no public PFAS disclosure from brand.
⚠Risky category by default
Vionic
Relief 3/4 Orthotic Insoles
Foam, gel, and textile insole base
Foam degradation and microparticles
Closed-cell foam can fragment under prolonged compression or heat stress, potentially…
Gel leaching or hardening
Gel cushioning compounds can experience plasticizer migration or crystallization over…
Azo dyes in textile layer
The textile covering may contain azo dyes, which can break down under sweat or friction…
Lower concern; no known PFAS-prone materials in insole design.
⚠Risky category by default
See every Vionic product we grade on the Vionic brand page, or the full synthetic athletic insoles & orthotics ranking.