It is amazing how much light this curtain blocks out.  When standing indoors in the middle of the day, you can still see through it, but somehow it cuts down tremendously on the amount of light that comes in.  However, if you are standing outside you cannot see inside.  It was simple to put up.  It did come with a very small hole in one of the panels, but I decided to keep them and just scrunch it up in that area.  Price was right for me as well.