They are waterproof...but they have zero stretch
So, I bought these because I thought they were cute and I needed to buy new ones anyway.  Though they fit my head, there is almost no stretch and I end up having to push my hair up into the cap instead of being able to stretch it around my head and 'catch' my hair like I can with a traditional hair cap.  I will not purchase these again and I'm actually on the search for ones that look like this, but have actual stretch to them.  I will say that they are cute and they are waterproof, so they do their job...but getting them on is a chore.
Rating: 3 stars