This Environmentally Hazardous Substance label is used to help notify shippers and transporters identifying the contents contained. This label will alert personnell the liquid or solid substances contained inside may be damaging to the environment. Marine Pollutant labels are required on all packages containing substances damaging to marine life. The "Dead Fish", "Dead Tree" icons are part of the Globally Harmonized System (GHS). From domestic to international shipments, this precautionary label conforms to IMO / IMDG along with CFR-49 and TDG regulations for shipments by ocean. Labels measure 4" x 4". Made of pressure sensitive peel-off heavy weight coated paper with fade-resistant UV-inks, for maximum durability. Use this label if you're shipping hazardous substances damaging to the environment and marine life.