After looking at the varied reviews I was skeptical on this - especially the high price, but thanks to a recent Amazon Promo deal discount, I decided to try it anyway, since I've been looking for something like this for years. Roll mats never worked well. I AM SO SUPER HAPPY WITH THIS PRODUCT! It arrived on Wednesday, I started the puzzle I had also ordered with it that night out of excitement to see how it worked, and finished that 1000 pc puzzle Thursday night. This case made putting it together, putting it away unfinished and storing it super easy. The sorting compartment made it quicker actually as i could see so many pieces at once and they stayed in their individual compartments. even after storing it upright, the pieces didn't flip (don't shake it up!) or slide to another compartment. The in-progress puzzle stayed in place, no pieces fell out - but you have to make sure the case is closed All the way around! Just press around the edges until it snaps, and it's closed. Easy. It's about an inch or so thick and really easy to store anywhere, which is a major plus as I have a small place with little storage. Now, the whole case is large when fully opened, but I was able to keep the puzzle board on my lap while on the sofa, and the case was right next to me with the cover up like a book. To get to the other sides, I just turned it around and let the cover hang down, so it works for me - I finally have my dining room table back! I didn't take it anywhere, but I'm sure transporting won't be a problem, even if the pieces flip over, they are still sorted, and you can always put in tissue or something in those place to keep the piece flat (not a major concern for me). It fits 20x27 puzzle, perfectly (typical size for 1000 pieces). Another plus - this case made it easy to make my puzzle a permanent piece of art, using the Presto Press and Seal Adhesive sheets (so much easier and less messy than glue). Once the puzzle was done, I closed the case, turned it over so the puzzle was faced down, applied the sheets to the back, and closed the case overnight to make sure everything stuck. It wasn't even 5 minutes. Now it's ready for framing! I haven't seen anything like this and I've been doing puzzles my whole life, but stopped a few years because of a lack of room to do it! I am so happy to get back to this, so I have to thank Amazon for those one-day deals or I would not have purchased it, as I thought the price was high at $79. For other searchers out there, I have seen a similar product retailing for $80 and up, but this is way better. I would definitely recommend this for any puzzle fans. Overall, A+.+ + +