Casper · Mattresses
Casper One Mattress
Lower PFAS concern; standard foam mattress with no known PFAS triggers, but brand discloses nothing.
Casper One uses conventional polyurethane foam and polyester fabric, materials not inherently requiring PFAS treatments. The brand makes no PFAS claims or disclosures. No public lab testing or third-party certification is available.
Shop Casper on Amazon →Material
polyurethane foam, polyester cover
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
furniture is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
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.
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.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
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.
Flame retardant chemicals (identity and migration unknown)
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.
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.
Heavy metals or contaminants in foam colorants or additives
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.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Mattresses
Avocado
Organic Hybrid Mattress
organic cotton, natural latex, wool, innerspring coils
Lower PFAS concern, natural materials without stain treatments, but brand doesn't explicitly address PFAS.
✓Verified PFAS-free by a third party
Avocado
Organic Wool Mattress
organic wool, organic cotton, natural latex
Lower PFAS concern; organic/natural core materials with no reported chemical treatments typical for this category.
✓Verified PFAS-free by a third party
Avocado
Vegan Mattress
organic cotton, natural latex, coconut coir, recycled steel coils
Lower-concern choice; vegan mattress avoids PFAS-prone synthetic foams and polyurethane, backed by credible third-party seals.
✓Verified PFAS-free by a third party
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.