Carried all my important stuff  when working in mobile medical clinics in Haiti recently. Holds passport, epinephrine pens, money, digital camera, antimalaria meds, phone, snacks, alcohol wipes, and more.  Now using it at work  as a Critical Care physician, as I am constantly running around the hospital. I don't end up with shoulder pain as I did when using the white coat laden with items! It's compact and I highly recommend it for health care workers.
Busy physician, Long Island, NY