4Sleep manufactures its mattresses with the environment in mind, taking care to use only renewable materials and water-based adhesives. The mattress’ components are CertiPUR-US certified, so you can be sure that you won’t be sleeping in a bed of heavy metals, formaldehyde, PBDE flame retardants or ozone depleters. As for fabrics, all 4Sleep mattresses are naturally hypoallergenic and resistant to dust mites, mold, and even clinging odors. In short, this is one of the safest and most environmentally friendly mattresses you could possibly sleep on.