Reebok · Synthetic Athletic Insoles & Orthotics
Reebok Memory Tech Shoe Insoles Men’s Size 5 With Mini Shoe Insert
Lower concern. Foam insoles unlikely to contain PFAS, but no brand disclosure.
Memory foam insoles are not a typical PFAS vector. Reebok provides no PFAS statement, but standard foam cushioning poses minimal fluorochemical risk. No red flags detected.
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Material
foam, memory foam cushioning
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
Reebok Memory Tech insoles are constructed from polyurethane-based memory foam, a temperature-responsive cushioning material that molds to foot contours. Memory foam typically contains polyols, isocyanates, and blowing agents bound during manufacturing. Once cured and used as an insert (not direct skin contact with chemicals), the polymer matrix is chemically stable under normal foot-temperature conditions and does not off-gas significantly after production phase.
The brand's record and disclosure
Reebok does not publish detailed chemical composition or third-party safety certifications for insole products, nor have recalls or complaints regarding chemical leaching from memory foam insoles been documented in public records. The brand has faced scrutiny on labor and environmental practices, but footwear insole safety specifically has not been a reported concern. No known formaldehyde-resin treatment or flame-retardant application is standard in memory foam shoe inserts.
How it compares in its category
Memory foam insoles sit mid-range for chemical safety in the insole market. Gel insoles and some cork alternatives carry fewer known chemical inputs; budget EVA foam insoles are comparable in risk profile. Reebok's product lacks third-party certifications (e.g., Oeko-Tex, STANDARD 100) that some competitor insoles carry, which would strengthen confidence in dye and finish safety.
If you buy it
Store insoles in a cool, dry place away from direct sunlight and heat sources above 140F (60C), as sustained high temperatures can degrade foam integrity and potentially affect polymer stability. Replace insoles every 12-18 months or when compression is visibly permanent, as degraded foam loses both cushioning and structural integrity. Wash only with cool water and mild soap; avoid bleach. Monitor for any odor changes or visible discoloration, which may indicate moisture retention or mold growth if stored damp.
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 off-gassing (VOC)
New memory foam can release volatile organic compounds (VOCs) during initial curing and first weeks of use. Reebok does not disclose whether foam is aired or off-gassed pre-sale; airing insoles in ventilation for 24-48 hours before use can reduce exposure.
Formaldehyde-based adhesives in construction
Memory foam insoles may use formaldehyde-containing adhesives to bond foam layers or attach backing. Reebok provides no material specification; insoles without Oeko-Tex certification carry unverified adhesive risk.
Azo dyes in colored foam or backing
If insole backing or foam is dyed, azo dyes (some linked to carcinogenic amines) may be used without disclosure. Direct skin contact is limited, but dye migration into sweat is theoretically possible with prolonged wear and moisture.
Antimony in polyester backing
If the insole includes polyester fabric backing or coating, antimony (a heavy metal catalyst used in polyester synthesis) residue may be present. Skin contact is indirect, reducing acute exposure risk.
Mold and bacterial growth from moisture retention
Memory foam absorbs and retains sweat and moisture, creating a humid microenvironment. Poor drying or prolonged dampness can promote mold and odor-causing bacteria, especially in warm climates. Regular air-drying is essential.
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.