Check out the "Mindfold" for a no-gimmick sleeping mask: http://www.mindfold.com/ http://www.mindfold.com/. It's really comfortable to wear and 100% pitch black

Check out the "Mindfold" for a no-gimmick sleeping mask: http://www.mindfold.com/ http://www.mindfold.com/. It's really comfortable to wear and 100% pitch black dark. I actually found it via HN some time ago and I like it a lot.