I made this for Halloween a few years ago & it is just hanging in the closet now. Cape measures 5' from neck to the point directly behind your back so it doesn't drag on the ground. From the farthest tips it measures about 9' & there are wood dowels glued in so you can spread your wings. The fabric is rubberised on one side & has a pattern stamped into it that makes it look like a bat wing. There are snaps installed to attach to your costume & these are hidden by the cowl.
I am only asking $30 + shipping. It should roll up & fit into a mailing tube. I could also remove the dowels to make shipping less expensive.