These are very nice panels.  The fabric is a good weight, sort of like canvas or duck cloth, and has good light filtering properties.  I wish there was a size between the 80" and 160" pair as I feel the panels look a little skimpy when the curtains are closed (my window is 48" wide and I purchased the pair that is 80").  The panels were a little wrinkled too but that will be corrected with a little pressing.