Authentic.Good day, may I kindly ask if this bag is authentic? It was given to me when I was in the USA. It has a cardboard-like, flexible type of material but gets deformed. It gets particularly heavy when I put in some things inside. And as you can see a sloppy application of the adhesive was used as well. And it's really large - 19in wide. Hope someone can help me, thank you in advance.