Takes time to arrive!
If you order this product, when they say it takes about a month to deliver, IT DOES!  But when it finally arrives, it works great.  The only downside I have is that it can get a little hot, meaning you may start to sweat when you use it.  It's pretty thick, which is a good thing because it does block out all of the light, but that "heaviness" could make it warmer for your forehead and eyes.  Overall, great product, but I hope you don't need it soon!
Rating: 4 stars