The material is not heavy, but they are lined.  The detail looks rich, and they give you two options to hang the curtains.  Rod pocket or tabs.  I took a chance and ordered the Bach Comforter Set and they match beautifully.  Also got the Ameesha Grey/ivory rug and it finished the room perfectly!  I put this in a bedroom off of our deck, and it is nice and light and airy.  Home Run!