Exacompta PP Envelope Punched Pocket, A4, Hook & Loop, Bag of 5 The Exacompta Envelope Punched Pockets are made from 0.2mm translucent polypropylene. A4 in size and can hold A4 documents. The pockets have an envelope closure and help closed by a hook and loop fastening. The envelope punched pockets come in a pack of 5