Currex · Synthetic Athletic Insoles & Orthotics
CURREX ActivePro Insoles
Lower concern. Foam insole with no known PFAS treatments reported.
Currex ActivePro insoles use foam and thermoplastic materials. No water-repellent or stain-resistant treatment claims found, reducing PFAS risk.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Foam core, thermoplastic shell, textile cover
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
CURREX ActivePro insoles use a foam core (typically polyurethane or EVA-based) bonded to a thermoplastic shell and covered in synthetic textile. Polyurethane foam in footwear is a standard, well-tolerated material that does not typically leach hazardous chemicals during normal wear. The thermoplastic shell provides structural support and durability without the known toxicity concerns of certain rigid polymers. The textile cover is the highest-risk component if it contains untreated synthetic fibers, though this is not documented as problematic for this specific product.
The brand's record and disclosure
CURREX maintains a publicly accessible materials policy and has not faced documented recalls or safety controversies related to chemical hazards in insole products. However, the brand does not publicly disclose detailed chemical testing results or third-party certifications (e.g., ISO, GOTS, or dermatological safety standards) for this product line. The company's silence on PFAS aligns with the industry norm for foam insoles, where water-repellent treatments are not a primary feature. No major safety complaints or regulatory actions are on record.
How it compares in its category
Foam insoles like this occupy the middle-to-premium segment of performance footwear accessories. They avoid the known heavy-metal risks associated with metal-arch supports and the microplastic shedding concerns of some gel-based alternatives. CURREX's branded positioning (orthopedic-grade) typically implies better quality control than budget foam insoles, though this does not guarantee chemical safety without formal testing disclosure. Comparable brands (Superfeet, Powerstep, Sof Sole) similarly lack comprehensive public chemical hazard reporting.
If you buy it
Store insoles in a cool, dry place away from direct heat sources (above 50C/122F can degrade polyurethane foam and thermoplastic). Replace them every 12-18 months of regular use, or sooner if foam visibly compresses or surface cracks appear, to maintain support and avoid inhaling degraded foam particles. Hand-wash with mild soap and cool water if needed; do not machine wash or dry-clean. Do not expose to prolonged sunlight or leave in hot vehicles, as UV and heat accelerate material breakdown.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Polyurethane foam degradation and off-gassing
Foam core may emit volatile organic compounds (VOCs) during manufacturing and initial use, though intensity is typically mild in finished consumer products. Degradation over time from heat and moisture can produce odors and fine particles; risk is minimized by proper storage and timely replacement.
Azo dyes in textile cover
CURREX does not publicly disclose dye standards for the textile cover on ActivePro insoles. Azo dyes are banned in the EU for certain applications but remain unregulated in US footwear components; no specific testing or restriction has been reported for this product.
Formaldehyde in synthetic textiles
Formaldehyde is sometimes used in textile finishing agents (wrinkle resistance, water repellence) in footwear components. No documentation suggests this is present in CURREX ActivePro insole covers, but the brand does not provide independent chemical testing results to rule it out.
Microplastics from thermoplastic shell wear
Thermoplastic shells can shed tiny particles if surface is abraded or creased during extended use. Risk is low under normal insole conditions (protected from direct friction inside shoes), but increases if shell is damaged or compressed unevenly.
Adhesive or bonding agent residues
Foam core and thermoplastic shell are typically bonded with polyurethane or epoxy-based adhesives. No hazardous residue reports exist for this product, but CURREX does not publish adhesive specifications or testing data.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More synthetic athletic insoles & orthotics grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.