* The unique assortment of Polyvision Maxi consists of presentation ring binders in addition to the standard A4 format, also in A3 portrait and A3 landscape formats. * The transparent cover sleeve is tear-resistant, and with the corner opening, documents are easy to insert. * The product is made of solid 1.5mm polypropylene. * Another unique feature is that the products are customizable through the transparent insertion sleeves on all 3 sides, including the front, back, and spine. * Customize for free via www.elbaprint.com.