True, I guess by posting the price listed on the tag it made it sound like the cosmetic bag was available to purchase, and it wasn't. Hallowishes is right, you could only get one if you made a qualifying purchase before or during the event hours and it was a GWP.
In fact I happen to have mine right here.
Disclaimer: my measurements are approximate, but here you go:
7 3/4 inches across
8 1/4 inches tall
It has a zip top and the pictures show the snap closure on the front pocket pretty well.
Inside is a key clip and a flat zip pocket on one side with a pouch style cell phone pocket on the other.
It's definitely narrow envelope style as far as the width goes.
I'm thinking I'll be able to fit basic theme park essentials like passes, credit card, money, cell phone, sunglasses, keys, and a few mints, but probably not much more.