white superior vellum: the superb aspect of this material permits to increase the impact of communication of your consignments grammage 90 g: more rigid and more resistant thanks to this stronger grammage, they arrive in a better state as well as the documents they contain opacity: excellent opacity permitting to assure a perfect security of your consignment closing: by self-sealing paw with protective strip to guarantee a perfect adhesiveness box of 500 1) size 162 x 229 mm 2) size: 176 x 250 mm 3) size 229 x 324 mm 4) size 229 x 324 mm with window 5) size 260 x 330 mm sleeves