Brooklinen · Mattress Protectors
Brooklyn Bedding Mattress Encasements
Avoid until brand discloses coating chemistry or obtains third-party testing.
Brooklyn Bedding markets these encasements as waterproof and moisture-resistant, functions commonly achieved with PFAS-based durability treatments. The brand provides no public disclosure of coating chemistry or PFAS status, and no third-party verification exists.
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Material
Polyester with waterproof/moisture-barrier coating (type 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
The waterproof barrier coating is unspecified by the brand. Fluorochemicals are common in waterproof polyester textiles and persist indefinitely in the body and environment; Brooklinen's silence on composition makes assessment impossible without third-party testing.
Source: ATSDR ↗Coating degradation and chemical release
Without knowing the coating polymer type, long-term thermal or moisture-induced degradation cannot be ruled out. Heat exposure during machine drying, storage in hot climates, or contact with sweat and body oils may gradually break down the barrier; this is a general concern for all coated textiles, not specific to Brooklinen.
Lack of third-party certification and transparency
The brand's refusal or failure to disclose coating chemistry or seek independent certifications (OEKO-TEX, GOTS, PFAS-free seals) is itself a hazard flag. Consumers cannot verify material safety claims, limiting informed decision-making.
What’s reassuring
Microplastics
Polyester encasements can shed microfibers over time, especially with repeated washing. No specific recalls or documented harm linked to Brooklinen encasements, but the risk exists across all polyester bedding protectors; washing in cold water and using a microfiber-capture bag reduces shedding.
Source: EPA ↗Formaldehyde / VOCs
Polyester fabric itself does not contain formaldehyde, but finishing resins applied during manufacturing sometimes do. No recalled or documented cases link Brooklinen encasements to formaldehyde off-gassing; standard polyester processing uses low-formaldehyde or formaldehyde-free methods in most modern facilities.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
Brooklyn Bedding encasements are polyester with a proprietary waterproof or moisture-barrier coating (exact chemistry not publicly disclosed by Brooklinen). Polyester itself is stable and low-risk when used as a fabric, but the barrier coating is the critical unknown. Waterproof coatings on textiles commonly rely on fluorochemicals (PFAS) or silicone-based systems; without disclosure, the specific chemistry cannot be assessed. Heat exposure during washing or use may accelerate off-gassing or degradation of the coating polymer, though typical mattress protector use (room temperature, infrequent laundering) keeps this risk minimal.
The brand's record and disclosure
Brooklinen is a direct-to-consumer bedding brand with no major public recalls or safety controversies on record for mattress protectors. However, the brand has not published material safety data sheets (MSDS), third-party certifications (e.g., OEKO-TEX, GOTS), or explicit statements about PFAS avoidance or use in their encasements. This silence on coating chemistry is a red flag in an industry where PFAS-free alternatives are increasingly available and marketed. No evidence of independent testing or transparency initiatives has been identified.
How it compares in its category
Mattress protector encasements vary widely in coating technology. Some brands (notably Helix, Layla, and certain Amazon-sold models) advertise PFAS-free or GOTS-certified polyester; others remain silent. Brooklinen's lack of disclosure places it in the middle of the transparency spectrum and suggests the brand may not prioritize or communicate ingredient safety as a differentiator. Competing products at similar price points often provide more clarity on materials and certifications.
If you buy it
Wash encasements in cool to warm water (not hot) to minimize any potential off-gassing or coating degradation; machine drying on low heat is safer than high heat. Replace every 2-3 years or sooner if the waterproof coating begins to fail (water seeping through despite washing). Ensure the mattress underneath is also protected or ventilated to prevent moisture buildup. If you or household members have respiratory sensitivities, request product testing data from Brooklinen before purchase, or choose a brand with published PFAS-free certification.
What we don’t know
- Basis
- Model estimate, 42% 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
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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.