Mine is made out of felt. I hung it up over a wide 3' closet with curtain rods. The doors are in the attic as after we had a fire, they used cheap stuff. Inside the closet is my stash, NOT ORGANIZED YET!
At first the blocks didn't stick properly so I used a hairbrush to loosen the nap. It works perfectly, and covers up the inside of the closet.
I think I will use K3n's advise and put a piece of wood at the bottom as my cat likes to walk back and forth and peak through the bottom of the felt. (Thanks for the advise).
I like the idea of just taking off the curtain rod and folding away when not in use, which hasn't been the case yet.