Vandoren Clarinet Ligature Leather Made of a material said to be both hard and soft, leather with a plastic cap absorbs overtones that are too bright and unpleasant. Vandoren's genuine leather ligature, Cuir, uses thick, sturdy leather. Three types of plates (metal, two types of leather) are included to support the reed, allowing you to enjoy changes in tone. The plates can be easily changed with Velcro.