No, the Lull Mattress is non-toxic. This is true because all foams used in a Lull Mattress are CertiPUR-US certified. This certification prevents the use of ozone depleters, harmful flame retardants or heavy metals during the manufacturing process. Ultimately, a CertiPUR-US certification also reduces the amount of off-gassing a mattress will have, which means less smell and less chemicals used in the process of making your mattress.