Radioactive Material, Excepted Package label includes a spot for you to enter your UN Number. This label includes the following statement: "This package contains radioactive material, excepted package and is in all respects in compliace with the applicable international and national governmental regulations." These DOT labels are made of pressure sensitive peel-off heavy weight coated paper with fade-resistant UV-inks and are available in rolls of 500 and lesser quantities. These labels conform and meet the requirements under international regulations. DOT CFR-49, ICAO, IATA, and IMDG regulations for maximum durability.