I have one. It's a black fake-leather back pack style. It has pockets on the front for various bits and bobs and about enough room for my wallet, my diary and a water bottle and that's it.

It replaced my brown (real) leather tardis-like back pack when it died.

I still call it a handbag even though it's a back pack. Shoulder bags ALWAYS fall off my shoulders and this way I still have my hands free.

I still use it at times, although I mostly chuck my wallet in the nappy bag now.

BW