I only gave it 4 stars because I wish the mask would hold up longer. The fabric separates over time. That being said, the mask blocks out all light, is adjustable and is very comfortable to wear. My husband and I have used this type of mask for several years and we have been very happy with it. The price is very reasonable and I buy several spares.After comparing many, many sleep mask designs, this was a clear winner. I do note that when I ordered more, the straps had been lengthened and no longer fit on my small head. (But the company had some older ones and we traded.) These masks do not crush your eyes, there is room to open your eyes. Design around nose prevents light from entering. This mask held up to traveling, hot sweaty weather, the works. I love these! (AND they're affordable!)I like the price, but the strap is always too big and out of the 4 I have purchased, 2 of them have come apart aroung the nose and eye area. Like the glue stops working or something.With my sweatshirt hood up and the sleep mask and earplugs on I am in my own little zone on any flight. The carrying case is handy to throw in my purse and I wouldn't travel without them.the strap is too loose and rips hair out :(I have been purchasing the black version for years - a new pair every 6 months or so because the elastic stretches out over time. I put up with it because I feel the contoured shape of this mask does the best job of keeping out the light. However, I won't purchase the pink version again - the elastic seems to be stretching out faster than the elastic on the black version. In all other respects they are identical.Works great. I love that it’s not black. The little bag keeps it all together.I LOVE this sleep mask. The eye contours make it so much more comfortable than other masks and it blocks the light well.