I have the smaller pair that are about the size of a quarter, when I bought mine they weren't presented with the larger pair otherwise I'd have those instead. They're easy to lose as I've lost one, hopefully home. The clasped will slip out the hole even if you bite the antennas the hole does NOT get smaller it is NOT made to move.
On the upside, the whole earring itself is very bendable which could help secure it. Mine are a single rope too.