Review (4/5): Works fine, make sure you hang it to dry to prevent mildew
It's about the same as every other shower cap I've ever used. Make sure you hang it to dry after use. Even though I always do that, it has gotten a little bit of mildew on the elastic.
Edit: I had this shower cap five years and the elastic has finally loosened enough to make the shower cap not work properly. After I started hanging it every time I had no more mildew problems. For less than $4, that's pretty good. I ordered a new one.