I have a really, really old one, I don't think it's a brand name or anything, its one I was given when I made my first trip abroad.
I use it while I'm on the journey out (I tend to take lots of cash instead of travellers cheques) but once I get wherever I'm going I'm pretty bad about leaving a lot of cash in my hotel room.
Thankfully I've not had anything stolen yet, but I should probably keep my money on me at all times to be safe.