Merco M234 Public Safety Barricade Tapes are made from an extremely high quality polyethylene film with large and bold lettering. Industry standard 1000' length rolls ensure you don't run out before you get to where 'the bodies are buried', so to speak. We only offer this in a durable 3-mils thick film, to ensure once you've gotten to those bodies the tape will be performing it's job long after the bioremediation specialists have left.