Casper One Mattress, Is It Non-Toxic?
Lower PFAS concern for standard foam mattress with no known PFAS triggers, though brand discloses nothing.
This mattress uses conventional polyurethane foam and polyester fabric, materials not inherently requiring PFAS treatments. Casper makes no PFAS claims or disclosures, and no public lab testing or third-party certification is available.
We flunk more products than we pass. This one earned its grade. How we grade
Material
polyurethane foam, polyester cover
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Casper One Mattress non-toxic? What it is made of
The Casper One uses polyurethane foam as its core layer with a polyester-blend cover. Polyurethane foam is chemically stable once cured and does not off-gas volatile organic compounds (VOCs) in amounts that trigger safety concerns for most users after the initial 24-48 hour period post-unboxing. The polyester cover is a standard textile component with no known formaldehyde treatment or azo dye issues documented for Casper products.
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.
Volatile organic compound (VOC) off-gassing from polyurethane foam
New polyurethane foam mattresses commonly emit trace VOCs during the first few days. The Casper One's off-gassing profile is not independently tested in public sources, but CertiPUR-US certification limits known hazardous chemicals. Sensory complaints (odor) are common but health risk from short-term exposure is low.
Polyester cover degradation and microfiber shedding
Polyester covers can shed microfibers with mechanical abrasion and washing over years of use. Casper's cover material and durability are not independently tested in public. Microfiber inhalation risk is low in normal mattress use but increases if cover is torn and foam particles are exposed.
Mold and bacterial growth in absorbed moisture
Polyurethane foam absorbs moisture if not protected by a waterproof barrier. Wet foam promotes mold and bacteria colonization over weeks. This is a use-related hazard, not a manufacturing defect; a waterproof protector eliminates this risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Flame retardants
Federal flammability standard CPSC 16 CFR 1633 requires mattresses to resist ignition. Casper does not disclose which flame retardant chemicals are used or their location in the mattress structure. No tested migration of flame retardants into air or skin contact has been documented for Casper products.
Source, EPA ↗Heavy metals
CertiPUR-US certification explicitly tests for lead, mercury, and cadmium in foam. No heavy metal contamination has been reported or tested in independent sources for Casper One.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Casper does not publicly disclose detailed chemical composition, flame retardant testing, or PFAS sourcing on its website or marketing materials. The brand holds CertiPUR-US certification for foam, which confirms absence of ozone depleters, heavy metals, and formaldehyde in the foam core, but does not address all off-gassing or cover materials. No product recalls or established safety controversies are on record for this model.
How it compares in its category
Casper One is mid-tier in transparency relative to competitors. Premium brands like Avocado and Helix publish more detailed chemical safety data; budget brands typically publish less. The polyurethane foam composition is standard across the industry and carries the same chemical profile as competitors at this price point. CertiPUR-US certification is an industry-wide baseline expectation for foam mattresses.
If you buy it
Unbox and air the mattress in a well-ventilated space for 24-48 hours to reduce any initial off-gassing odor. Do not expose to sustained heat above 120°F (49°C) or direct sunlight for extended periods, as polyurethane can degrade. Use a waterproof mattress protector to prevent liquid absorption into the foam, which can promote mold growth. Rotate or flip according to manufacturer guidance (typically every 3-6 months) to extend lifespan and even wear.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Casper has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Casper One Mattress?
Avocado
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Avocado
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- organic cotton, natural latex, wool, innerspring coils
- We found no PFAS statement from the brand
- Volatile Organic Compound (VOC) off-gassing
3 hazards checked on this product, all on its full breakdown.
More mattresses 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.