It conceals a pocket with enough space for two lots of bus fare. It supposed to be for emergencies so no more of that pesky, 'I can't come home quickly to rescue you from the children because I have to go to the bank first and then break my note at the shop for bus fare.' But seeing that his wallet was empty last night and I had to fill it with my very own money this morning, I'm not 100% certain that it'll be stocked for long. Or used for emergencies only.
Being uber-masculine, I didn't have too much license on the fabric choices so I used the same print I used for his Ipod cozy. I think it's cute enough that I'll make myself one with much snazzier fabric. With a pocket for cyanide.