First, for me they are called slippers. And secondly, what you are all wearing are not them. It's all in the quality and the make and the shape. I know it seems like there shouldn't be a difference, but there totally is. My mom & I are in mourning because the store that makes our slippers in Honolulu has gone out of business. We stubbornly refuse to wear any others and are slowly wearing to shreds the last ones we have.
Cute nephew story: Last year when we & my parents were visiting my sister's family while they were on furlough in the states, we were bemoaning the fate of our slipper store. My sister admitted that she'd stopped wearing hers because her husband can't stand the sound. We were, of course, deeply appalled by this, which calls into serious question the character of my brother-in-law. Who would marry a Japanese woman while not being able to stand the sound of slippers?
But I digress. So my sister says, well, I've got these extra pairs in good repair, so you can each have one. We were happy. And she handed me a pair. Whereupon, my nephew enters the room, finding the slippers at my feet. He casts a terrible wounded look at me and picks them up, delivering them to my mom. "How could you possibly steal Grandma's slippers?" he was clearly emoting to me. My mom & sister laugh and try to explain to him that Auntie has slippers too, but he would not be persuaded, and clearly thought less of me. We eventually had to let my mom take them to her room and sneak them out to me later, after he'd gone to bed.