The infant sleeping pad is made of polyurethane foam with a water-proof polyethylene vinyl acetate (PEVA) cover. The foam contained in the mattress is certified CertiPUR-US which adheres to the following specifications:Made without ozone depletersMade without PBDEs, TDCPP or TCEP (”Tris”) flame retardantsMade without mercury, lead, and other heavy metalsMade without formaldehydeMade without phthalates regulated by the Consumer Product Safety CommissionLow VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)Additionally, the Finnbin mattress meets the requirements of 16 CFR Part 1633 (federal flammability (open flame) standard for mattress sets) when used without a foundation.