These are fabulous curtains they are made of a very good quality fabric and block out the sun!  I bought them for my front porch as I live in Kansas and the afternoon sun is a killer!  The wind blows pretty much all the time so we ran a cable through the top and at the bottom of the curtains.  I bought clip-on curtain rings and ran the cable through the rings and attached the clamp to the curtain.  They look great and are keeping the sun off my porch!