About Portfolio folder: Tulpen/Tulips, Jacob Marrel, Collection Rijksmuseum Amsterdam
The Portfolio folder is a sturdy file folder for archiving anything up to A4 format documents. Thanks to the handy flaps, the paper cannot slip out and the elastic band provides extra security. The Portfolio folder offers space for a stack of documents up to 2 cm thick. The spine easily forms around the documents due to the preformed ridges.