Review (2/5): Horrible smell
I returned these because upon opening the bag, they smelled like some sort of horrible, toxic chemical. They are made in China, so I returned them without using because I didn't see a way to get that smell or chemical out of the fabric without washing them a couple of times. And I don't want to sleep with nasty chemicals against my head.
Just a note, they may be effective curlers, I just didn't try them because I couldn't get past the bad odor.