No, Casper mattresses are generally considered non-toxic. The company uses OEKO-TEX-certified mattress covers and CertiPUR-US-certified foams, which are safe for human health.
However, some Casper mattresses use continuous filament fiberglass as a fire barrier. This compound can pose health risks if it leaks outside of the mattress.
Based on our chat’s with Casper’s customer support, the following Casper mattresses include fiberglass:
- Casper Original
- Casper Original Hybrid
- Casper Nova Hybrid
The following Casper mattresses do not include fiberglass:
- Casper Wave Hybrid
- Casper Wave Snow Hybrid

CertiPUR-US certified foams are low in VOCs (volatile organic compounds) and contain none of the following:
- Ozone depleters
- Tris flame retardants
- Polybrominated diphenyl ethers (PBDEs)
- Heavy metals
- Phthalates
- Formaldehyde
OEKO-TEX-certified fabrics are tested for chlorinated benzenes, PAHs (polycyclic aromatic hydrocarbons), solvent residues, and other harmful substances. Therefore, they meet specific safety standards and are considered safe.