Used these curtains in a living room with FULL SIZE WINDOWS. Love the quality and the thickness of the fabric. These provide excellent privacy during the night. Open during the day look great. They are not blackout, but still block sunlight for a more cozy atmosphere during the day. 
You can’t see through them though. 
They are heavy since I got the 120” L, but nothing that can’t be solved with some sturdy rods.