Overpack labels are used when shipping dangerous goods with an overpack, outer package. This simple Overpack label, clearly states, "Overpack", notifying shippers and transporters that an overpack is being used to ship dangerous goods contained in an inner package. The inner package must comply with prescribed specifications according to DOT CFR-49, IATA, ICAO, and IMO / IMDG. From domestic to international shipments via land, air, or ocean, this label is required on all shipements using overpacks. Labels measure 6" x 2" in. made of pressure sensitive peel-off heavy weight coated paper with fade-resistant UV-inks, enabling maximum durability. Use this Overpack label when shipping with overpacks.