I'd Like to Know Where You Got the Notion

Can anyone who sews help me?

I'm trying to find a cloth-covered wire bent into the shape of a U that sort of folds over and has a u-shaped piece that it fits into so the two of them work like a button to hold a coat together.

my big puffy whorey pimp ebay coat has them and several have fallen off and i'd like to replace them. but i do not know what the fuck they're called. hook & eye? frogs?

i went to joann fabrics but it was no help. probably cause i didn't know what the F i was looking for.