Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: I'm looking to transport foam-core mounted posterboards with this carry case.  Does it have rigidity or are the corners soft ?
Document: I purchased this portfolio to carry our business sign. It is perfect. It is a soft sided valise so I added a piece of foam core board to protect our sign from damage in transport.
It claims to fit 24x36 foam core, but not very easily. I would recommend next larger size if your planning to fit 24x36 anything.
Yeah, I have art work of all sizes, especially up to about 25" x 30". This bag has plenty of pockets: places for your hard matted art work, soft art work, a pouch to carry your pencils, a pocket outside to carry items slightly larger than 8" by 11". The handle is equipped with Velcro so you can combine the handles when you're ready to carry your work. Great Item!
The case is well built. I would recommend the case to anyone. Has handles that can be converted to shoulder strap. I thought the price was reasonable.
All in all, a great purchase! I'm very excited to use it.
I ordered this for work for transporting mounted photos. We had been using a portfolio that was way too large and cumbersome. This portfolio fits 24x36 photos perfectly - comfortable fit, just enough room to spare without being oversized and easily handles a half dozen 1/4&#34; mounted photos.The construction of the materials is good. No fear of the portfolio falling apart while being carried through NYC.
It's big enough for my largest watercolor paintings, and has a long strap for ease of transport. It's made of pretty solid material, so it CAN get a bit heavy before you realize it, but that's to be expected - it's a pretty bit portfolio. Truly waterproof, too, so excellent all around.
I should have listened to the other reviewers. Big is not always better. It is so bulky and difficult to carry and your art work has to be huge. I wish I had gotten the smaller size.
It was the largest portfolio I could find, and it fit our newly-made posters perfectly. Keeps them flat, clean, and protected. Also easy to transport with a suitcase-like handle. Much better than attempting to transport a stack of loose posters! Material is nylon and durable.
i needed something to carry my 2d portfolio from college in and keep it safe. this works great. there isn't a hard board or anything in it...but i had a large sketching pad and that made it sturdy enough
Answer: the corners are rigid - the edging around the outside of the case makes the entire outside edge stiff. leaning against a wall the case does remain upright (doesn't bend over or fold in half) if that helps