If someone needs to sleep during the daytime, a sleep mask could assuredly be beneficial. Closing the blinds or other window treatment does not totally close out the light.A study from Sleep Medicine showed that one night of interrupted sleep is enough to make you more depressed, confused, and tired. (Nidra Facebook pg.)
The Nidra sleep mask is very lightweight, thin, foldable, and the domed area for one’s eyes is wonderful in that it doesn't rest on the eyelids and push against the eyelashes (which would be a terrible annoyance). The nose area is cut out so that the nose is not covered. This is a plus because it could prove claustrophobic if it interfered with one’s breathing.
I can see advantages to having this lightweight mask along on long trips simply tucked away for a quick retrieval for a nap.
It is soft, lightweight, has a strap to go around the head that adjusts and fastens with Velcro. Hand washable is a real plus, too.
If you're a side-sleeper or a tummy-sleeper, you won't have a problem using this mask as it is comfortable in any position.
Very inexpensively priced so that you can travel with one and keep one in the bedside nightstand at home.
Check them out: Facebook - https://www.facebook.com/nidragoods or - Amazon Product: http://amzn.to/1xtBGJw.
DISCLOSURE: I received one or more of the products mentioned above for free using Tomoson.com. Regardless, I only recommend products or services I use personally and believe will be good for my readers.