I had the clear plastic "invisible" belt for a couple years to wear with pants under shirts and was tired of smelling faintly of plastic when I wore it. I remember these fasteners from the late 70s when I was a kid, and it lays pretty darn close to as flat as you might get in a belt buckle. The elastic part of the belt is slightly thinner than I remember and expected, but hey, it works, it was super affordable, my pants aren't falling down, and I don't smell like plastic.