Salomon Men's X Ultra 360 Edge Mid Hiking
Hiking boot with unspecified water-repellent coating; PFAS status unclear.
Salomon X Ultra 360 Edge uses a water-repellent coating finish typical of hiking boots, but the brand does not disclose whether PFAS chemicals are used. No third-party testing or PFAS-free certification available.
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Material
Textile upper with water-repellent coating finish, rubber sole
Lab data
No public lab test
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What Salomon Men's X Ultra 360 Edge Mid Hiking is made of, ingredients and materials
The X Ultra 360 Edge Mid combines a textile upper (likely nylon or polyester blend) with a water-repellent coating (water-repellent coating) finish, plus a rubber sole. The textile fibers themselves may be treated with formaldehyde-based resins during manufacturing to improve wrinkle resistance or durability. The water-repellent coating finish is applied to repel water without making the boot waterproof; Salomon does not publicly specify whether this uses PFAS-based or fluorine-free chemistry, which is a significant gap in transparency for a premium hiking boot.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Formaldehyde / VOCs
Nylon or polyester textile uppers in mass-produced hiking boots are often treated with formaldehyde-based resins for wrinkle resistance and durability. Salomon does not disclose whether this boot receives such treatment; residual formaldehyde can off-gas during use and storage, particularly in warm conditions.
Source, ATSDR ↗Azo dyes in colored textiles
The textile upper is dyed; if azo dyes (which can reduce to hazardous amines) are used without restriction, exposure is minimal during wear but present in manufacturing. No specific testing or certification (like OEKO-TEX) is advertised for this model.
PFAS
The water-repellent coating finish is applied but Salomon does not publicly confirm whether it is PFAS-based or fluorine-free. Industry practice shows both chemistries in use; absence of specification is a known compliance and transparency issue in the hiking boot category.
Source, ATSDR ↗Rubber sole degradation and leachates
Rubber soles may contain plasticizers or antioxidants that can leach into sweat or soil contact over time. Salomon does not disclose rubber compound specifications; degradation is slow under normal conditions but accelerates with heat or UV exposure.
What’s reassuring
Antimony in polyester fibers
If the textile upper is polyester, antimony trioxide may be present as a catalyst residue from fiber manufacturing. No recalls or test reports for this product are on record; residual antimony in finished fabric is typically very low but not routinely disclosed.
The full breakdown
The brand's record and disclosure
Salomon (owned by Amer Sports) does not maintain a public PFAS elimination timeline or detailed material disclosure for its apparel lines. The brand has faced no major recalls for chemical residues in this product category, but neither has it published certifications like bluesign or GOTS for textile safety on this specific model. This silence on water-repellent coating composition is consistent with industry norm but remains a compliance and transparency gap.
How it compares in its category
Most mid-range hiking boots use water-repellent coating finishes; some competitors (e.g., certain Merrell or Keen models) now advertise fluorine-free water repellency. The X Ultra 360 Edge Mid is not marketed as free from PFAS-based water-repellent coating, placing it in the larger pool of hiking boots where water-repellent coating chemistry is often undisclosed. Premium alternatives do exist with certified fluorine-free treatments, though they may carry a higher price.
If you buy it
Wash the boot in cool water before first wear to reduce formaldehyde residue from manufacturing. Avoid prolonged heat (direct sun, near heating vents) that can accelerate any remaining volatile off-gassing from textile treatments. Reapply water-repellent coating treatment only after checking the product label or contacting Salomon to confirm whether replacements are PFAS-based; if unspecified, use a fluorine-free water-repellent coating product. Inspect the rubber sole and seams annually for degradation; replace the boot when cushioning compresses noticeably or seams begin to separate.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Salomon has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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