This is the first page protector in this line I tried it was a 12x12
Tried the 12x12 size, , the flap did not work as well the flaps on the swing shutters protector do, but the Idea is great , and it could be that I got mine whe the Flip page first came out and the company was still working the snags out of this Great Idea.
Like the fact they now have the 8.5x11 sizes, will be getting some, and more of the 12x12 swing shutter ones as well