Really helped with my insomnia
I need a dark room to get a good night sleep.  I have tried other masks and they have not worked as well.  I suffer from insomnia, and this mask really helps.  They eye cavities are key.  If I wake up in the night and am able to open my eyes without brushing against the mask (which wakes me up) I am able to go back to sleep.  I hover between a four and a five star because of the strap.  I it thinker than most, but I found it could slip in the night.  If I could, I would give it 4.5 stars.
Rating: 5 stars