Classic shape and cute bag.
Not sure about how much it can fit though.
The distance the lowest curve of the zipper to the bottom of the bag, doesn't look like very much. And the width isn't that wide either.
If I fit a pair of sunglasses, I don't think I can fit my 6 ring key holder in it.
But I'd probably be able to fit in a cardholder, 6 ring key holder, and cell phone (not sure about the biggest size of a cell phone).
The smaller the bag, the fussier the zipper may be, depending on the shape. Hopefully it's not too hard to zip open and close.
The best way to determine for the 2 concerns above are to see it in stores, try the zip, and see what can be fit inside!