They're super handy to carry all your jazz and you'll still be able to jump around with a refreshment in one hand while the other's punching the air. They just make a whole lot of sense...don't judge us.
Besides, everyone's wearing them. From Kendall Jenner to Rihanna have been sporting the '90s trend, so why would we ever question it?
We decided to take the controversial fashion trend to the streets, and get a bloke's opinion on the matter.
Cue their answers.
What do men on the street think of bum bags?
Marc, 29, single
"Yeah, it's cool, ya know. It's a comeback on the 90s. Yeah, I like the 90s."
Robert, 22, dating
"I guess, it's homage to 80s post whatever. It's kinda cool but when they do it with studs and stuff it's not really my thing. The whole thing is this trend that girls dress like late '80s metal heads now. They steal it from the cool guys and don't even listen to good music. They usually don't really have the music taste to go with it..."
Adam, 30, dating
"I'm quite a practical person so I don't really mind them really. Not too fussed really."
Simone, 24, single
"Yeah they're alright. I like them..."
Gareth, 38, married
"No, no, I do not like bum bags. Mr Motivator eat your heart out."
Kieran, 28, dating
"No, I'm definitely not a fan."
Johnny, 35, dating
"I'm anti bum bags, all the way."
Will this make you think twice about wearing the trend? Tweet us @handbagcom
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