What case should you use with a Bitt-Boy?

I wanted to buy a case for my bitt-boy.

I looked around on line, compared measurements etc.

And then I realised, either by design or by accident. That the bitt-boy is about the same size as an old ipod.

So looking for an mp3 case which was aimed at an ipod will work.

I bought a "Case Logic Universal MP3 Player case" from ebay for £1.95 which works well.