Blackout Cotton Sleep Mask
I am a HUGE fan of following the natural rhythms of sunlight and darkness as a foundation of health. Our entire biology is organized around the circadian rhythm produced by these two signals.
This is the sleep mask I have used for years to block out ambient light in the bedroom or from outside. It has these big cushy pads that cup your eyes, allow you to open your eyes with the mask on, but see only total darkness.
It stays on my head really well, and can be washed and dried.
I used to try to produce darkness with blackout curtains, and those are still nice to have in case it’s light outside at 5am when you need to pee, and you want to able to go back to sleep. Otherwise, this mask does the job of blocking out all the light when you’re actually sleeping.