In my understanding, Zagg sold the rights to their original (aluminum) iPad case to Logitech, and it's the same product. The version sized for the iPad 2 will not fit the iPad 1. The sizing on this design is critical because it must mate exactly with the edges of the iPad to create a friction seal when closed.

By comparison, a vinyl case like the Kensington folio can accommodate small differences in height, width and thickness.