Ariat · Stain-Resistant Professional Workwear
Ariat Men's Rebar M4 DuraStretch Made Tough Double Front Straight Leg Pant
Work pants with water-repellent coating; PFAS content unconfirmed by the brand.
Ariat Rebar M4 pants use water-repellent coating-treated cotton blend for durability without PFAS disclosure. water-repellent coating finishes commonly contain PFAS, but Ariat won't confirm specifics.
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Material
cotton blend with water-repellent coating (water-repellent coating) finish
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ariat Men's Rebar M4 DuraStretch Made is made of, ingredients and materials
Ariat's Rebar M4 is a cotton-blend fabric (exact ratio not publicly specified) with a water-repellent coating (water-repellent coating) finish applied to the surface. water-repellent coating coatings on workwear are typically fluorocarbon-based compounds that shed water without creating a full waterproof barrier. The M4 designation suggests a mid-weight, flexible construction intended for job-site durability rather than formal wear, meaning the finish must tolerate repeated flexing, abrasion, and washing.
What’s concerning
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.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
water-repellent coating composition (fluorocarbon status)
Standard industrial water-repellent coating on workwear is predominantly legacy fluorocarbon-based; Ariat does not disclose whether this product uses PFAS-containing or PFAS-free alternatives. Given silence and parent company history, fluorocarbon water-repellent coating is the statistical assumption.
Antimony in polyester components
If polyester is present in the blend (common in cotton-poly work blends for durability), antimony trioxide may be used as a polymerization catalyst. Exact fiber ratio is not disclosed; risk is low if content is under 10%, higher if polyester exceeds 20%.
VOC off-gassing from water-repellent coating finish
New workwear with applied surface coatings can emit low levels of volatile organic compounds during initial wear and after washing. Off-gassing is typically odorless and subsides within a few washes; no specific reports for Ariat products, but consistent with the product category.
What’s reassuring
Formaldehyde / VOCs
No recalls or independent test results on record for formaldehyde contamination in Ariat workwear. Cotton-blend weaves may use urea-formaldehyde in wrinkle-resistance or sizing, but water-repellent coating finishes (not wrinkle resistance) dominate this product's chemistry profile.
Source, ATSDR ↗Heavy metals
Ariat workwear is typically piece-dyed or overdyed with standard indigo or neutral tones. No product-specific testing or recalls for restricted azo dyes (benzidine-based) or heavy metal dyes are on public record; color fastness appears adequate in user reports.
Source, FDA ↗The full breakdown
The brand's record and disclosure
Ariat, owned by Wolverine World Wide, does not publicly disclose water-repellent coating chemistry on product labels or marketing materials. The parent company has faced litigation over PFAS contamination in tanneries and groundwater but has not issued category-wide commitments to water-repellent coating alternatives without intentionally added PFAS on workwear as of available public record. No independent certifications (Bluesign, OEKO-TEX, GOTS) are advertised for this product line.
How it compares in its category
Most mainstream cotton-blend work pants from Carhartt, Dickies, and Wrangler carry similar water-repellent coating finishes with undisclosed chemistry. Branded workwear rarely labels water-repellent coating composition because fluorocarbon chemistry is proprietary. PFAS-free alternatives exist (some brands now advertise bio-based water-repellent coating or paraffin-wax finishes) but are not mainstream in budget-to-mid-tier workwear; Ariat's silence on this choice is typical rather than exceptional.
If you buy it
Wash in cool water and air-dry to minimize potential leaching of finish components and preserve water repellency. Avoid high heat (tumble dry on low or hang-dry) as heat can degrade water-repellent coating and may mobilize surface coatings. Expect water-repellent coating effectiveness to decline after 30 to 50 washes; reapplication products exist but typically contain similar chemistries. If concerned about PFAS exposure, contact Ariat directly to request water-repellent coating formula disclosure; lack of public answer is itself informative.
What we don’t know
- Basis
- Model estimate, 40% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Ariat has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Stain-Resistant Professional Workwear
Banana Republic
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- We found no PFAS statement from the brand
- Formaldehyde / VOCs
3 hazards checked on this product. See all of them.
Brooks Brothers
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- We found no PFAS statement from the brand
- Residual azo dyes and synthetic dye intermediates
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Dickies
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- 100% cotton twill, no water-resistant treatment
- We found no PFAS statement from the brand
- Azo dyes and residual finishing agents
2 hazards checked on this product. See all of them.
More stain-resistant professional workwear 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.