No, Allswell mattresses are not toxic. The brand uses CertiPUR-US certified foams, which contain none of the following:
- Ozone depleters
- Heavy metals
- Volatile organic compounds (VOCs)
- “Tris” flame retardants
- Phthalates
- Formaldehyde

The Allswell Cool is not marketed as an organic mattress, but it’s safer and more eco-friendly than many other mattresses out there.
Additionally, the mattress did quite well in our off-gassing test. Although it had a strong smell after unboxing, the odor dissipated within six days.