Brooklinen · Mattress Protectors
Waterproof Downright Mattress Protector
Avoid until Brooklinen discloses coating chemistry or certifies PFAS-free.
Brooklinen's waterproof protector uses durability treatments, a common PFAS source in textiles. The brand provides no public disclosure of coating chemistry, PFAS presence or absence, or third-party testing, leaving risk unresolved.
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Material
Polyester/cotton blend with waterproof coating (composition unspecified)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent treatments have historically contained PFAS chemicals.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
PFAS
Brooklinen does not disclose the coating chemistry. Waterproof mattress protectors commonly use PFAS-based treatments for durability, but polyurethane or silicone alternatives exist. Without certification or ingredient transparency, PFAS presence cannot be ruled out. This is graded separately per your PFAS assessment (20/100).
Source: ATSDR ↗Coating degradation and microfiber release
Volatilization of coating components (VOCs/off-gassing)
Any applied polymer or fluorinated waterproof coating may release trace VOCs, especially if heated or not off-gassed before use. Polyurethane coatings in particular can off-gas for weeks post-manufacture. Brooklinen does not specify cure time, material composition, or VOC testing results, making baseline safety assessment difficult.
What’s reassuring
Formaldehyde / VOCs
Polyester-cotton blends may use formaldehyde-based finishing resins for shrink resistance and wrinkle reduction. No public record of Brooklinen using untreated fabrics or Oeko-Tex certification exists for this product. This is a common category-level risk, not a Brooklinen-specific incident.
Source: ATSDR ↗Allergic sensitization from undisclosed fragrance or finish residues
No fragrance, dyes, or proprietary antimicrobial treatments are documented for this protector. Residual manufacturing chemicals or coating monomers could theoretically trigger contact dermatitis in sensitive users, but no adverse reports are on file.
The full breakdown
What it's made of and why it matters
This protector combines polyester and cotton with an applied waterproof coating whose chemistry Brooklinen does not publicly specify. The coating is likely either a water-resistant polymer (acrylic, polyurethane, or silicone) or a fluorinated compound (PFAS-based). Polyester-cotton blends themselves are stable, but the coating's durability, leaching behavior, and chemical composition are the material safety concern here. Unspecified waterproofing is the core opacity problem.
The brand's record and disclosure
Brooklinen maintains a premium positioning around quality and transparency but has not published ingredient disclosures, PFAS status, or third-party safety certifications for this mattress protector specifically. The brand does not list PFAS-free credentials or certifications (Oeko-Tex, GOTS, etc.) on product pages. No recalls or documented safety incidents are on public record for Brooklinen mattress protectors. The silence on coating chemistry is a deliberate choice, not a gap filled by regulatory action.
How it compares in its category
Most mattress protectors in this price range use polyester or polyester-blend bases with polyurethane or silicone waterproofing to avoid explicit PFAS disclosure. Brooklinen's lack of transparency is typical of the category rather than exceptional. Higher-priced alternatives sometimes carry Oeko-Tex or EU Ecolabel certification, which excludes certain fluorinated compounds and heavy metals. Budget protectors often skip any certification; mid-tier brands like Brooklinen rarely bridge that gap publicly.
If you buy it
Wash before first use and inspect the surface for any visible damage to the coating; protect it from pilling or abrasion that could expose the base fabric. Do not dry-clean or expose to temperatures above 65C (150F) to avoid coating breakdown and any potential off-gassing. Replace if the waterproof layer visibly degrades, cracks, or peels, as a compromised coating can fail to protect the mattress and may allow microfiber migration. Store dry and away from direct sunlight to extend coating lifespan.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Brooklinen has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Mattress Protectors
Helix
Premium Mattress Topper
polyurethane foam, polyester cover
Volatile Organic Compounds (VOC) off-gassing from polyurethane foam
Limited concern
Polyester cover degradation and microfiber shedding
Limited concern
Polyurethane foam degradation and chemical leaching with age
Limited concern
Water-resistant coating composition (undisclosed)
Limited concern
Lower PFAS risk, though contact Helix directly for water-resistant coating details they don't disclose.
⚠Risky category by default
Casper
Sleep Comfy Mattress Topper
Polyurethane foam, cotton/polyester blend cover
Volatile Organic Compound (VOC) off-gassing
Limited concern
Polyurethane foam degradation and particle shedding
Limited concern
Dust mite and mold colonization
Limited concern
Lower PFAS concern for standard foam topper with no known water-repellent coating or stain treatment, unless you need verified PFAS-free assurance.
⚠Risky category by default
Purple
Waterproof Quilted Mattress Protector Breathable Bed Cover Fitted Sheet For Bedroom Furniture Protection Cooling Topper Purple
Quilted polyester blend with waterproof/breathable coating (unspecified)
PFAS
High concern
Azo dyes in polyester fabric
Limited concern
Microplastics
Limited concern
Coating degradation and leaching with age and heat
Limited concern
Avoid unless Purple discloses coating chemistry, since waterproof mattress protectors commonly use PFAS-based treatments.
⚠Waterproof or stain-proof treatment
More mattress protectors 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.