Ariat · Stain-Resistant Professional Workwear
Ariat Men's Rebar M4 DuraStretch Straight Leg Work Pants
Work pants with water-repellent coating finish; PFAS chemistry unconfirmed.
Ariat Rebar M4 uses DuraStretch cotton blend with water-repellent coating and stain-resistant coatings typical of workwear. Ariat won't disclose PFAS content or use third-party verification.
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Material
cotton blend with water-repellent coating/stain-resistant treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Ariat Men's Rebar M4 DuraStretch Straight is made of, ingredients and materials
Rebar M4 DuraStretch pants are primarily cotton blended with synthetic stretch fibers (typically elastane or polyester), finished with a water-repellent coating (water-repellent coating) coating. The water-repellent coating chemistry is not disclosed by Ariat; it may be fluorinated (PFAS-based) or newer non-fluorinated variants, but no specification is publicly available. The cotton content reduces inherent microplastic risk during wear, but the synthetic stretch component and water-repellent coating treatment introduce potential chemical exposures during care and laundering.
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.
PFAS
Unconfirmed formulation; non-fluorinated water-repellent coating (silicone, hydrocarbon, or hybrid blends) may release volatile organics or allergens during laundering and wear. No third-party testing or brand disclosure available.
Source, ATSDR ↗Microplastics
Synthetic stretch fibers shed microplastics during wear and washing, particularly with aggressive laundering. This is inherent to elastane-blended garments and not specific to Ariat; standard practice for this product class.
Source, EPA ↗What’s reassuring
Azo dyes in color fastness
No recalls or reports of restricted azo dyes (carcinogenic amines) in Ariat workwear. Cotton blends with standard industrial dyes carry minimal risk if not intentionally treated with hazardous classes, though dye suppliers are not named.
Formaldehyde / VOCs
No published reports of formaldehyde-based wrinkle-resist or shrink-control finishes in Rebar M4 line. Cotton-primary blend reduces likelihood, but supplier chain not disclosed.
Source, ATSDR ↗Heavy metals
No recalls or alerts for lead, cadmium, or chromium in Ariat workwear fasteners or dyes. Standard industry testing by major retailers suggests acceptable levels, though no third-party certification provided.
Source, FDA ↗The full breakdown
The brand's record and disclosure
Ariat, owned by CIP (Conduct Investment Partners) and founded in 1992, does not publicly disclose water-repellent coating chemistry, PFAS use, or third-party certifications (Bluesign, GOTS, Fair Trade) on product pages or sustainability documentation. The brand has no known recalls specifically for chemical hazards in this product line. This silence on water-repellent coating composition is typical of mainstream workwear brands but represents a transparency gap relative to premium outdoor brands that increasingly specify fluorine-free finishes.
How it compares in its category
Work pants in this category (Carhartt, Dickies, Timberland Pro) similarly use water-repellent coating finishes without disclosure; Ariat's approach is industry standard but not exemplary. Some premium workwear competitors now specify non-fluorinated water-repellent technologies, though availability in this price range remains limited. Cotton-dominant blends (vs. 100% synthetic) offer lower inherent microplastic shedding than full polyester work pants.
If you buy it
Wash in cool water with mild detergent; hot water and high heat may degrade water-repellent coating and increase release of finish chemicals. Avoid drying on high heat; air dry or low tumble. Reapply water-repellent coating as directed (typically annual) only if needed; excess applications increase chemical burden. Replace when seams fail or fabric pills excessively, not just for water resistance loss. Do not use fabric softener, which degrades water-repellent finishes and leaves surface residues.
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
- Ariat has made none
Formulations change between production runs, so check the current label. How we grade.
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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.