No pressure or tightness across eyeballs Stuffed with soft foam core for eye recesses, unlike the flat and thin masks would press on the eyes while sleeping 100% Black-out & Fit -- Higher nose curve conforms to most face contour and block light underneath w/o pulling against the bridge of the nose Fully adjustable from 15.8" to 27.6" in circumference Machine washable inside a laundry bag on delicate Alaska Bear-Slide into a silky haven

Somewhere I read a convincing article about the health advantages of sleeping in total darkness which our ancestors have been doing since they came down out of the trees and started walking on two legs, and continued until about 150 years ago when electric lighting came into use.

Why using a sleep mask?
The hormone Melatonin regulates the day-night cycle of the human body and controls the recovery phases during the sleep. For the production of this hormone, the human body requires sufficient darkness. Lightness prevents the production of Melatonin. Even a little light caused, for example, by a digital alarm clock can be a disturbance. The best sleeping mask however will naturally help you increase melatonin levels and increase REM sleep.

Sleep masks- what for?
- if your bedroom cannot completely be shaded by black-out curtains and you want to sleep in
- if you cannot fall asleep because your partner wants to read or watch TV
- if you want to sleep while travelling, e.g. on airplanes or in trains
- if you are looking for perfect relaxation during yoga, wellness or meditation