NanoRaptor on Nostr: The hard lining is like a tough eggshell-box card, with 5mm of soft touch foam, that ...

The hard lining is like a tough eggshell-box card, with 5mm of soft touch foam, that had the material spray-glued to it. Of course the foam lasted about 10 years leaving the material glued to dust :).

It sat on the top of my slightly-too-tall head one annoying time too many so I ripped it out and life has been good since.