This is a clarinet strap. The V-shaped plate prevents the feeling of constriction around the neck, which can negatively impact playing, allowing you to use the strap comfortably. The shoulder portion is made of leather. It appears creased from being folded for storage, but there are no cracks in the leather. The plate is a lower-cost plastic version. There are scratches on the metal hook from use, but this does not affect its functionality.