Sheex Performance Mattress Protector, Is It Non-Toxic?
Avoid until the brand discloses coating chemistry or gets independent testing.
Sheex Performance protectors repel water and stains through treatments typically PFAS-based, but the brand stays silent on what coats the fabric. No independent verification available.
The better-graded swap
Avocado Green Mattress
Organic Cotton Mattress Pad Protector
85/100 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
Polyurethane or polyester blend with water-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Sheex Performance Mattress Protector non-toxic? What it is made of
The Sheex Performance Mattress Protector uses a polyurethane or polyester blend base with a water-resistant topcoat. The coating chemistry is not publicly disclosed by Helix, which is a red flag because water-resistant treatments on textiles historically relied on PFAS compounds (perfluorocarbons). Polyurethane itself is generally stable when applied to fabric, but the durability and off-gassing profile of the specific coating formula remain unknown without independent testing or manufacturer transparency.
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.
Water-resistant coating degradation and off-gassing
Polyurethane and polyester coatings can off-gas volatile organic compounds (VOCs) and breakdown products if exposed to heat or moisture stress. The specific coating on this protector is not disclosed, so the degree of off-gassing risk cannot be quantified without manufacturer data or independent testing.
Polyurethane durability and wear-related particle release
Polyurethane textiles can degrade over time, especially if washed frequently or in hot water, potentially releasing microparticles. Mattress protectors experience constant friction and moisture exposure, accelerating this wear.
Bacterial or mold growth in coating if maintenance is poor
Water-resistant coatings can trap moisture if not properly ventilated during use or storage. Poor air circulation around a damp protector may encourage mold or bacterial growth, though this is a usage issue rather than a chemical hazard in the product itself.
What’s reassuring
Flame retardants
No flame retardant chemicals are listed in available product descriptions for the Sheex protector. Polyurethane and polyester have inherent flame resistance, so added treatments may not be present; however, Helix does not explicitly confirm the absence of such additives.
Source, EPA ↗Formaldehyde / VOCs
No reports or product claims indicate formaldehyde-releasing finishes on this protector. Polyurethane blends do not typically require formaldehyde cross-linkers, but the coating formula remains unknown.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Helix is a sleep-focused brand (mattresses, pillows, bedding) but does not appear to have published detailed chemical disclosures, safety certifications (such as OEKO-TEX or Global Organic Textile Standard), or independent lab testing results for this protector. The brand has not publicly addressed PFAS use in their water-resistant coatings. No major recalls or safety violations are on record for this specific product, but the silence on coating chemistry is a material transparency gap.
How it compares in its category
Mattress protectors in this price and performance tier typically use synthetic water-resistant treatments; most brands do not disclose coating chemistry. Higher-transparency competitors (e.g., Avocado, Birch) publish OEKO-TEX certification or explicitly avoid PFAS, while budget options often match Helix's silence. This product sits in the middle, adequate function, unclear safety profile, below industry-leading disclosure standards.
If you buy it
Avoid exposing the protector to sustained heat (tumble drying, direct sunlight, heated mattress pads) as this can accelerate coating breakdown and potential off-gassing. Use cool or gentle-wash cycles and air dry to extend the coating life and limit chemical release. Replace it every 3-5 years or if waterproofing visibly degrades (pooling instead of beading). Contact Helix directly to request the safety data sheet (SDS) for the water-resistant coating; their response will indicate commitment to transparency.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sheex has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Sheex Performance Mattress Protector?
- organic cotton
- We found no PFAS statement from the brand
- No PFAS statement found from the brand
- Organic cotton
- We found no PFAS statement from the brand
- Waterproofing chemical exposure
2 hazards checked on this product, all on its full breakdown.
- 100% linen, no reported coating
- We found no PFAS statement from the brand
- Heavy metals
3 hazards checked on this product, all on its full breakdown.
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.