Perfect
Completely blacks out the light--a little too well!  I meant to tap an afternoon nap and forgot to set an alarm (I usually nap for 2-3 hours).  I woke up 6 hours later!  Definitely set an alarm when using this.  The adjustable straps are really nice too.  The only thing I don't really like is that sometimes when I move my head against the pillow, it moves the mask and lets cold air blow onto the bridge of my nose.  But that's not a complaint of the product!  I love this mask.  It is my go-to when it's bright in my room.<br /><br />Edit: a year and a half later and it's falling apart.  I'm sad because this was my favorite sleeping mask.  I give it 4 stars now because I like my items to be durable, and this one didn't stand up to it.  But I did get a year and a half of frequent usage!
Rating: 4 stars