Bum bags are hands-free bags that are often worn around the waist. That's why the other term for it is a waist bag. Bum bags are usually lightweight, convenient and minimalistic. Its popularity began in thee 90's wherein it became the most common type of travel bag during that time. And why not? Bum bags relieve the soreness of shoulders during a trip or when going on a traveling spree. It does not need to be carried over the shoulders as it is wearable around the waist! But of course, bum bags remain versatile throughout the years. Basically, people can still wear it over their chest, on their shoulders or at the back.