They are made of polyester, soft to the touch, smooth to the touch, durable, and have no pilling or odor. The woven design has a stylish look and is available in a variety of colors to match any curtain style. They are designed with hanging cords for easy installation. Simply tie them directly to the curtains or use hooks. They will hold the curtains firmly in place to prevent them from slipping. Ties are machine washable on a gentle cycle and can be ironed to maintain a wrinkle-free look.