You can move such curtains in any way as manual, using a chain or cord, and on the machine. Therefore, there is nothing complicated in the operation of curtains. Such curtains are performed using special technology, which allows you to keep fixed folds for a long time. The material used can be any, the main thing is that it is able to maintain corruption for a long period of time. But for the most part they use polyester. Such material is convenient and practical to use, and it can be processed by a special composition that will protect them from solar exposure and remove unnecessary pollution.