I love this wallet.  It is roomy but not too bulky.  It easily and securely hooks to a belt loop. I can't imagine how a pick pocket could remove it without you being able to intervene.  It also is good if you feel like you might lose or misplace your wallet.

It is tightly held closed with a Velcro fastener. There is a zipper compartment on the side which is great for change and can be accessed without opening the wallet. If I had one small complaint, it is that opening up the Velcro was a bit loud.

I will use this for any international trip, and perhaps even trips into large cities in the US.