Remember the big crazy angel thing covering the Jenova tank at Nibelheim? The thing Sephiroth rips down and then you're like, "oh dear sweet lord, that woman has an eyeball in her bosom!"
Anyway, this is just the big suit thing edited down to the head. If you'd like to wear it as a mask (and scare the bejesus out of your FFVII playing friends), you can leave the eyes (or rather, lack thereof) out.
While we're at it, I've had this lying around for a while, been waiting for a Crisis Core release to tag it on. PDO only, as with so many of the Crisis Core gimmick models.
Now if you'll excuse me, I have got a monstrous pile of scrap paper to clean up after the FFIX party marathon.
Oh hey, look at that. First release of 2010. Fancy.