I have used this 100% Blackout Sleep Mask by MyHalos for a few nights now and for the most part, I am very happy with it. The material is very soft and feels nice against the skin, plus I really like the zero eye pressure design. Essentially, it does not stress my eyes at all, proving that it is comfortable to wear for as long as needed without feeling any kind of discomfort or irritation.
The provided storage pouch is indeed welcome, especially for travel, plus the adjustable strap easily helps achieve a snug fit. Does its work well in blocking most light, though I did notice some light leak around the nose. It's not much of a big deal to me, but if total darkness is what you require to fall asleep, this might be something for you to consider.
Despite its faults, it is still one of the better sleep masks I have ever used, and at such a bargain. Great for naps, at night, or even as a blindfold for relaxation. For those seeking a well-made, comfortable sleep mask, I would recommend this one.