These at least appear to be slightly floppy unlike the hard-plastic 3.5" ones.

@tubetime I'd read that the 3.5" floppy size was partly that way to fit a specific type of mailer envelope used in Japan, which meant it could be sent cheaply back and forth by mail. Not sure if it is apocryphal or a true story.

@tubetime They're super cute, as disks go!

@tubetime And they're properly floppy. Neat.

@tubetime I still have them.

@tubetime I’m very much envious of a plastic sleeve allowing me to carry five three-and-one-quarter inch floppy diskettes in my pocket. LOOK OUT YALL COMING AT YOU!