STUNNING CURTAINS!  I purchased the slate blue curtains and they are absolutely beautiful!  They are cotton but look like velvet and I always get great compliments from friends and neighbors.  I also purchased the indigo blue for a guest room.  I would suggest you inspect the fabric before installing.  I failed to do so and had already thrown away the packaging when I noticed several panels had holes and and scrapes from might have been a machine gripping the fabric.  They are hidden in the folds of the curtain, but had I noticed them sooner, I would have had them replaced.  I would definitely buy them again!