I highly recommend http://www.mindfold.com/ http://www.mindfold.com/ The branding is a bit silly. But. You can open your eyes and it remains pitch black--zero

I highly recommend http://www.mindfold.com/ http://www.mindfold.com/ The branding is a bit silly. But. You can open your eyes and it remains pitch black--zero light leakage. I started using them on flights, now use at home when I really need the extra z's.