Nice design.  Basically 3 pockets.  In front there are 2 pockets.  Bottom one is credit card sized.  Top one fits bills perfectly.  Side opening pocket is perfect for passport.

It's very comfortable.  I usually don't carry my keys or passport when walking about...just bills and credit cards. When tucked in, it's almost unnoticable.  I forget it's there. It's easy to whip out and tuck back in.

I've used this on 3 trips so far and I can't imagine how someone can pick this wallet.