Overall, it's a decently made, soft mask that can be used for both fun and function. It is comfortable enough to wear for sleep and sexy enough to use in partner play. If you're concerned with fully blocking light, this may not be the mask for you. For an introduction into blindfolds or an innocent gift that may suggest you'd like more, however, this works nicely

It works for a blindfold but not for a sleep mask. If you want to try a blindfold this one is pretty and works well.

The Satin Blindfold from Sex & Mischief is lightweight, durable, and padded for comfort. It is very discreet looking and, to the normal eye, it would appear to be just a sleep mask. While it does not completely keep out light, it does very well at blocking sight.