Only CertiPUR-US certified materials are used in Puffy mattress foams. This means that no ozone depleters, PBDEs, TDCPP or TCEP flame retardants, mercury, lead, and other heavy metals, formaldehyde, or phthalates are used in the production of these foams. They also have low VOC (Volatile Organic Compound) emissions, ensuring that they are completely safe to sleep on.