Nice for long hair
The idea of this reminds me of the very old fashioned practice of wrapping hair in rag strips at night for curls in the morning, but without all the effort.  It's very soft and comfortable but the headband part does slip and slide at night (but  may be due to tossing and turning while sleeping).  Produces soft curls with hardly any effort.  Due to the material it is made out of, I would think it would only be effective on long hair - it would be hard to wrap layered or short hair around it.  A few sets of these would be a lot of fun for a sleepover or get together with a bride-to-be.
Rating: 4 stars