The design is made with an overlapping fold over flap that is ideal not only for mailing but for an easy solution to 11"x17 " storage.

Acid Free, Archival Safe, PVC Free!!! Great for Presentation, Storage and Organization: Photo, Toner Ink Jet-Safe Exclusive Crystal-Clear Poly Glass Polypropylene Material Helps resist dust and moisture Rigid, Acid Free Mounting Board included Protective flap to secure contents Artwork, Photographs, Commemorative posters, drawings, prints, blueprints, architectural plans, newspaper, magazine articles, maps, diagrams, restaurant, menus, and large format documents.

In the 11"x17" size, the Brown Kraft Envelopes are hard to come by. They are ideal for any document or bulky material that is this size, or even smaller, if the user needs a heavy-duty material to cover and carry their important items.

The innovative zip closure allows you to effortlessly open and close the envelope. The unique envelope design protects your materials from the elements, forming a dust and water-resistant seal unmatched by traditional paper and poly envelopes. It is ideal for carrying documents, drawings, prints, blueprints, architectural plans and catalogs. The clear front pocket allows for a separate area to secure a cover sheet or template.