Review (2/5): One size does not fit all
It's nice that this bonnet is larger than most others to accommodate longer hair, but there is not elastic in the head band, so it can fit pretty loose on your head.
If you have short to medium hair, this will more than likely not work for you because it will easily slide off while you are sleeping... or slide down and cover your eyes while you're sitting up, reading your phone.
The material is nice and smooth, but that's about it.