The Art Profolio brand PolyZip Envelopes by ITOYA are the best way to organize and store your art and photography. Available in nine popular sizes, the Art Profolio PolyZip Envelopes are made from durable polypropylene and are archival safe for long term storage. Featuring an easy to use zip closure, the Art Profolio PolyZip Envelopes seal out the elements to help resist dust and moisture. An expanding gusset provides flexible storage for a single or a stack of art and photo materials; Ideal for carrying supplies and organizing projects too. The Art Profolio PolyZip Envelope also has a single sheet pocket in the front for a routing slip or a content sample. From photographs to digital printer outputs to posters, the Art Profolio family of products are the ultimate in storage and organizational solutions for the artist and photographer.