Review (4/5): the best I've tried!
I have tried nearly a dozen different sleep masks, and this is my favorite. It manages to block the light without gaping, and manages to keep from pressing on my eyes without any of the annoying padding or buldging cups I've experenced on others, which allows me to sleep comfortably in my sides. The material has remained silky after years of use. I also like the adjustable velcro strap.
I bought a new one recently as a back-up and was disappointed to find it scented, especially since I use it mainly for my migraines! However, with nothing to lose, I put it through my washing machine on "cold" and air-dried it. After that one wash, the scent was gone, and doesn't irrtate my very sensitive skin.
You cannot beat this mask for comfort and effectiveness, especially for this price. still, give yourself enough time before needing it to throw it through the washing machine.