Tyvek (White spunbonded olefin) Open Side Booklet & Open Side Center Seam

Open Side Booklets, as well as Open Side Center Seams, have their opening on the long dimension - offering inserting ease and convenience. These envelopes are manufactured with a white spunbonded olefin, a material that is extremely strong, lightweight and water resistant. Please note - available as a flat or an expansion envelope.