Sleepy's · Mattress Protectors
Sleepy's Deluxe Comfort Cool Mattress Protector
Skip until brand discloses waterproofing chemistry.
Polyester/polyurethane blend features waterproof coating with unspecified chemistry. Mattress protectors typically require water-repellent treatments, historically a major PFAS application without third-party certification.
The better-graded swap
Brooklyn Bedding
Brooklyn Bedding Mattress Encasement, Twin
75/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyester/polyurethane blend with waterproof coating (unspecified type)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Sleepy's Deluxe Comfort Cool Mattress non-toxic? What it is made of
This protector uses a polyester/polyurethane blend with an unspecified waterproof coating. The polyurethane base itself is not inherently toxic, but the coating's chemical composition is critical, waterproofing is typically achieved using either fluorinated compounds (PFAS), silicone, or polyurethane-based treatments, each with different safety profiles. Without disclosure, you cannot assess what you are sleeping on nightly or what may off-gas or migrate into your mattress over time.
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.
Volatile organic compounds (VOCs) and off-gassing from polyurethane
Polyurethane-based coatings can emit isocyanates and other VOCs during manufacture and installation, particularly in the first weeks. Without ventilation data from Sleepyhead, off-gassing potential is unknown; off-gassing is typically mild in finished protectors but not zero.
Microplastic shedding when heated or washed
Polyester fibers shed microplastics with age, heat exposure, and repeated washing. A mattress protector worn directly under a person experiences nightly friction and regular laundering, making microfiber release into bedding and washing water a practical concern over the product's lifetime.
Degradation of waterproof coating over time
Polyurethane and synthetic coatings degrade with washing, heat, and UV exposure. As the waterproof layer breaks down, the exposed polyester and underlying materials may begin to off-gas or shed fibers more freely; Sleepyhead does not specify expected lifespan or warning signs of coating failure.
Contact dermatitis or skin sensitivity from finishing chemicals
Polyester and polyurethane products often retain residual dyes, optical brighteners, and processing agents that can irritate sensitive skin with prolonged contact. No hypoallergenic testing or chemical residue limits are disclosed for this product.
PFAS
The coating chemistry is the primary safety unknown. If fluorinated (PFAS), it poses inhalation and leaching risks; if silicone-based, less data on long-term safety; if polyurethane, off-gassing risk. Sleepyhead's silence prevents informed choice.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Sleepyhead has not publicly disclosed the specific chemistry of their waterproofing agent or responded to PFAS inquiries based on available information. The brand has not pursued third-party certifications (like OEKO-TEX, GOTS, or CertiPUR-US) that would signal commitment to chemical transparency. This silence on a product worn directly against skin and bedding is a red flag for consumer trust, especially in a category where PFAS use is documented in competitor products.
How it compares in its category
Most mattress protectors use either PFAS-based Teflon-family coating coatings (cheapest, most durable, highest risk) or polyurethane/silicone alternatives (pricier, variable durability). Premium competitors like Coyuchi and Avocado disclose their use of PFAS-free coatings; mainstream options from Tempur-Pedic and Purple remain vague but have larger safety teams. Sleepy's combination of synthetic blend plus silent disclosure puts it below the transparency baseline of the category.
If you buy it
Wash before use (warm water, gentle cycle) to shed loose fibers and potential processing chemicals. Avoid high heat drying, which can degrade polyurethane and increase off-gassing. Replace every 3-5 years as the waterproof coating degrades with age and washing, which also increases microfiber shedding risk. Do not use fabric softeners or heavy bleach, which can compromise the coating's integrity.
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
- Sleepy's has made none
Formulations change between production runs, so check the current label. How we grade.
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Find an alternative on AmazonMore 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.