Too difficult.
This was a cute idea. I had read the other reviews about issues getting the poster onto a poster board, but I didn't think it would be that bad. The first time I bought a regular foam poster board and it was way too small. I had to go back to the store and get a tri-fold board, which was too big and had to be cut. It takes a lot of work to get the whole poster to lay flat, we eventually gave up. This product should be sold attached to a board. It's a cute idea, though.
Rating: 2 stars