Erm... what should I call this?

After drawing that logo thingy, well, the first thing that came into my mind is that... is it really suitable for hoodie/t-shirt designs? And considering that the previous one was a trashy piece of work... well, even if we get it printed, it wont be good enough for shirt designs. So... I came up with another thingy, this thingy. Seriously, I haven't thought of what it should be, or what to call it. It look like a ghost, but I believe that it is a bubble of some sort. Oh well, leave the name aside. guess this will look fine behind our backs =D

Symmetrical version (the middle line is supposedly the zipper)