I bought this slingpurse before I left on a 2-week river cruise in Russia.  I was able to put my credit cards + passport in RFID protector and was able to also carry my cash safely.  It slid onto my belts very easily, and I wore it on belts more than on the straps that came with the slingsafe.  The straps that come with it are easy to adjust to fit your waist.