Currex · Synthetic Athletic Insoles & Orthotics
CURREX HikePro Insoles
Lower concern; no waterproof coating disclosed. No public PFAS testing available.
Currex HikePro uses foam and fabric without advertised water-resistant or stain-resistant treatment. Brand silent on PFAS; no public lab data exists.
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Material
foam cushioning, fabric, no disclosed coatings
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 HikePro insoles use foam cushioning (likely polyurethane or ethylene-vinyl acetate) bonded to fabric backing. No waterproof membrane or Teflon-family coating is disclosed, which eliminates the primary PFAS vector in performance footwear. The absence of visible chemical treatments on the upper fabric reduces exposure to dyes, resins, and flame retardants common in treated textiles.
The brand's record and disclosure
CURREX maintains minimal public chemical disclosure; they do not advertise certifications (e.g., Oeko-Tex, GOTS) or independent material testing. The brand has not faced documented recalls or public safety allegations related to HikePro insoles. Absence of PFAS acknowledgment reflects broader industry silence rather than confirmed risk.
How it compares in its category
Insoles are lower-contact than full footwear and do not experience the same thermal stress as cooking surfaces. Typical alternatives (gel, memory foam, cork composites) use similar base materials; CURREX's undisclosed coating status is unremarkable in the category. Most insole manufacturers do not transparently test for heavy metals in dyes or formaldehyde in adhesives.
If you buy it
Inspect insoles for visible wear, delamination, or crumbling foam before first use and periodically during wear; replace if structural integrity fails. Avoid prolonged exposure to direct heat (oven, dishwasher) and store in a cool, dry location to slow foam degradation. Hand wash with mild soap if soiling occurs; do not machine wash, as agitation may loosen the fabric-foam bond.
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.”
Formaldehyde in fabric adhesives and resins
Foam-to-fabric bonding typically uses polyurethane or phenol-formaldehyde adhesives; CURREX does not disclose adhesive chemistry or off-gassing limits. Risk is low in foot-contact scenario but not ruled out without material safety data.
Azo dyes in fabric backing
Colored fabric components may contain azo dyes, some of which can release carcinogenic amines under microbial or thermal stress. No testing data available; risk depends on dye class and regional manufacturing standards.
Polyurethane foam degradation and chemical leaching
Polyurethane foam can break down with age and moisture exposure, potentially releasing volatile organic compounds (VOCs) and isocyanate residues. Insole foot contact and sweat exposure may accelerate degradation; extent depends on foam formulation and additives.
Heavy metals in pigments or dyes
No public testing or recall data for CURREX HikePro insoles indicates heavy metal contamination. Pigment hazard is not established for this product, though undisclosed colorants remain untested.
Antimony or flame retardants in polyester fabric
Fabric composition is not specified; if polyester blend, antimony oxide or halogenated flame retardants are theoretically possible but not documented for this model. Insoles are not a primary flame-retardant application.
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.