Our mattresses are built with CertiPur US certified foams!CertiPUR-US certified foams are:? Made without ozone depleters? Made without PBDEs, TDCPP or TCEP (”Tris”) flame retardants? Made without mercury, lead, and other heavy metals? Made without formaldehyde? Made without phthalates regulated by the Consumer Product Safety Commission? Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)