Allswell · Mattresses
Allswell 4 Memory Foam Mattress Topper
Lower concern mattress topper; memory foam core itself is not a typical PFAS vector, but cover treatment details are undisclosed.
Allswell's 4" memory foam topper is primarily polyurethane foam with a textile cover, materials not inherently associated with high PFAS risk. However, the brand provides no public disclosure about whether the cover receives stain- or water-resistant treatments, which is where PFAS chemicals often hide in textiles.
Shop Allswell on Amazon →Material
memory foam (polyurethane) with polyester/cotton 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 Allswell 4 consists of polyurethane memory foam (the core layer) bonded to a polyester/cotton blend cover. Polyurethane foam is petroleum-derived and typically contains flame retardants added during manufacturing to meet federal flammability standards (16 CFR 1633). The cover material blend may include synthetic dyes and finishing chemicals applied during fabric production. These components are generally stable when fully cured, but new foam products commonly release volatile organic compounds (VOCs) during the first weeks of use.
The brand's record and disclosure
Allswell (owned by Walmart) maintains a product transparency page but does not publicly detail flame retardant chemistry, cover treatment specifics, or third-party certifications (such as CertiPUR-US or GREENGUARD) for this topper. The brand has not faced major product safety recalls related to this line. However, the silence on PFAS stance and chemical disclosure limits independent verification of manufacturing choices, particularly regarding water-repellent or stain-resistant treatments on the cover.
How it compares in its category
Memory foam toppers are a mainstream category; Allswell's 4-inch depth and polyurethane construction are standard. Competitors in the same price range (e.g., Tuft & Needle, Purple) often provide CertiPUR-US certification documenting flame retardant and VOC limits; Allswell does not advertise this credential for this model. The lack of third-party certification and chemical disclosure is a relative weakness, though the core material itself (memory foam) is not a known PFAS hotspot compared to water-resistant fabric toppers.
If you buy it
Unbox and air out the topper in a well-ventilated space or outdoors for 24-72 hours to allow initial VOC off-gassing. Avoid placing it in a sealed room or low-airflow bedroom immediately. Do not expose to temperatures above 130 F (54 C) or prolonged direct sunlight, as polyurethane can degrade and off-gas more readily under heat. Wash the cover separately (polyester/cotton blend) in cool water; check the care tag for specific guidance. Replace the topper if the foam begins to tear, flatten unevenly, or develops visible mold.
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 Compounds (VOCs) and off-gassing
Polyurethane memory foam, especially newly manufactured, frequently releases VOCs including formaldehyde and toluene. Allswell does not publish CertiPUR-US or GREENGUARD certification data for this topper, so actual emission rates are not independently verified. Initial off-gassing typically decreases after 1-2 weeks with adequate ventilation.
Flame retardant content and identity
All polyurethane mattress toppers sold in the US must meet 16 CFR 1633 flammability standards, typically achieved through flame retardant additives incorporated into the foam. Allswell does not disclose which flame retardants are used in this model, limiting assessment of their long-term safety profile or bioaccumulation risk.
Cover fabric finishing chemicals
The polyester/cotton blend cover may have been treated with dyes, sizing agents, or finishes during manufacturing. No specific recalls or reported contamination incidents for Allswell toppers are on record. Standard textile processing typically poses low residual risk if the cover is washed before prolonged skin contact.
Foam degradation over time
Polyurethane memory foam can break down with age, heat, humidity, or UV exposure, potentially releasing additional volatiles or particulates. Unspecified flame retardant chemistry in this product makes it unclear whether degradation byproducts may include concerning compounds. Proper storage (cool, dry, dark conditions) extends topper life and minimizes this risk.
Microplastic shedding from cover
Polyester blend covers can shed fibers, particularly with washing and use. No established data link normal use of Allswell toppers to significant microplastic migration. Washing before first use and minimizing aggressive agitation reduce shedding.
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.