It's just a simple little design I made up as I went along, although kudos to Alison of MachenMachen for a quick sketch one lunch time in a park in the city when I was wondering how I might proceed to the flap part.
The yarn is Regia Design Line Kaffe Fassett. It's left over from socks I made earlier this year. I've knit it at quite a fine gauge, on 2.25/US1 needles, magic loop.
Sean's really happy with it. However, knowing it's a prototype, he was happy to offer design suggestions, mainly that it was probably a little bigger than it needed to be and I could probably take as much as a finger's width, or about ten stitches off. So I'll play around with it and make one for myself and write up what I did.
I need one fast because I'm sick to death of my earbuds rolling around in my handbag and getting caught up with pens and other stuff that floats around in my bag.