Oboz Women's Ousel Mid B-Dry
Hiking boot with water-repellent coating treatment; PFAS status undisclosed by brand.
Oboz does not publicly disclose PFAS chemistry in B-Dry waterproofing. Nubuck leather and fabric are inherently lower concern, but the waterproof membrane's composition remains unknown. Contact the brand for PFAS details.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Nubuck leather, fabric lining, B-Dry waterproof membrane
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
Aqua Pure
3M Aqua-Pure AP802B Whole House Filter Housing
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product. See all of them.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product. See all of them.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product. See all of them.
What Oboz Women's Ousel Mid B-Dry is made of, ingredients and materials
The Ousel Mid uses nubuck leather (sanded surface finish), a fabric lining, and the B-Dry waterproof membrane system. Nubuck is a natural material but requires regular conditioning to prevent water damage and dirt accumulation. The B-Dry membrane is a synthetic laminate designed to repel water without breathability loss, which typically relies on fluorinated compounds (PFAS) for water and oil repellency, though Oboz does not publicly disclose the specific chemistry or PFAS content of this system.
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
Nubuck leather and synthetic linings may be treated with formaldehyde-based resins for water resistance and color fastness. Oboz does not disclose finishing chemistry; no independent testing or recalls of this product for formaldehyde content are on record, but the material class and price point suggest industrial tanning and finishing standards typical of the footwear industry.
Source, ATSDR ↗Azo dyes in leather and fabric coloring
Nubuck is vegetable or chrome-tanned leather that is then dyed and sanded; the specific dyes used are not disclosed by Oboz. Azo dyes are restricted in many EU products but still used in US footwear. No specific recalls or complaints are recorded for this model.
Heavy metals
Chrome-tanned leather (standard in this price range) can retain residual chrome, nickel, or cobalt. Oboz does not publish tannery certifications or metal residue limits. Direct skin contact in a hiking boot with moisture and friction theoretically increases uptake risk, though dermatitis reports specific to this model are not documented.
Source, FDA ↗Teflon-type coating or fluorinated polymer fume inhalation during heat exposure
If the B-Dry membrane contains Teflon-type coating-based coatings (not confirmed by brand), excessive heat (drying near fire, prolonged direct sun) could theoretically release fumes. Normal use and outdoor storage carry minimal risk, but improper care (oven drying, radiator drying) should be avoided.
Microplastic shedding from synthetic membrane over time
The B-Dry laminate is a plastic-based film; normal wear and flexing will gradually shed microparticles into soil and water. No quantified shedding rate data is available for this specific product, but this is inherent to all synthetic membrane hiking boots and currently unregulated in the footwear industry.
The full breakdown
The brand's record and disclosure
Oboz has not made public commitments to PFAS reduction or PFOA/PFOS phase-out in their product lines, nor do they publish material sourcing certifications or chemical disclosure statements. The brand operates without visible transparency on waterproofing chemistry across their footwear range. This silence is notable in an outdoor footwear category where competitors (Salomon, Arc'teryx, some Merrell lines) have begun communicating PFAS alternatives or reduction timelines.
How it compares in its category
Women's hiking boots with synthetic waterproof membranes (Cordura, Gore-Tex, B-Dry) dominate the mid-range market; most rely on fluorinated water-repellent coating treatments with similar PFAS exposure profiles. Boots with alternative systems (waxed canvas, silicone-based coatings, or membrane-free construction) exist but are less common and often sacrifice durability or water performance. Oboz's B-Dry is industry-standard but unremarkable; no data suggests it performs better or worse than peers, only that the brand declines to specify composition.
If you buy it
Clean and condition nubuck regularly with designated leather care products to maintain the protective finish and reduce reliance on the waterproof layer. Avoid sustained immersion in water; treat the boots as water-resistant rather than fully waterproof. Inspect the seams and leather surface for wear annually; once the nubuck surface frays significantly or the membrane delaminates, water protection fails and replacement is needed. Store in a cool, dry place away from direct heat or sunlight, which can degrade both leather and synthetic membranes.
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
- Oboz has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Waterproof Boots
Mephisto
Men Mephisto Curt Mt SNEAKER
- leather, textile, rubber sole
- We found no PFAS statement from the brand
- Volatile organic compounds (VOC) off-gassing from adhesives
Vasque
Hiking shoes Vasque Women's Horizon Mid
- Leather/nubuck upper, synthetic/rubber sole, no coating disclosed
- We found no PFAS statement from the brand
- Azo dyes (leather/textile coloring)
4 hazards checked on this product. See all of them.
Find an alternative on AmazonMore waterproof boots 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.