[Artist Alley] How do y'all go about storing all of your 11"x17" prints for easy access at cons?

Right now I'm using a book-like portfolio but there's too many prints in each slot and the book is getting heavy so I need to upgrade. I'm looking for something to store all of the 11x17s in, not just display photos. Preferably something I can quickly grab from at cons, and better if easy to travel with. Thank you so so much :)!