Blueprint or Poster Shipping Bag 9.5" x 33" 100 Count - The most economical way to mail, UPS or FedEx blueprints. Made of a combination of the strongest polyethylene, the .004mil. bags are treated to accept self adhesive labels, black markers or conventional ink pens. The bags are easily closed with tape or staples. Weather-resistant. Packaged and sold 100/box.