Review (4/5): Decent
I use this cap to contain my extra long hair when I sleep. My hair is much longer than the cap allows, but I knew that when I bought it. The extra length just coils at the bottom of the 'bag'.
Comfortable, seems decently made for the price (I haven't washed it yet), and actually stays on most or all of the night (depending on how much thrashing I do in my sleep).
A bit difficult to get on with all hair ending up inside since my hair is loose when I put it on. But if you have ever used a sleep cap, this is the same with all of them.
It DOES leave a stripe across my forehead, but not as bad as some I have used.