ALL-NATURAL ROSIN: D’Addario light rosin is made with all-natural ingredients combined in a special process to create rosin that offers premium performance at a great value. EASY GRIP: Thoughtfully designed, the light rosin sits in a unique plastic channel that provides an easy grip. Ideal for students. VERSATILE: D’Addario natural rosin is suitable for horsehair or synthetic hair violin, viola or cello bows. It is available in light or dark rosin. FITS NICELY IN CASE: Compact and attractive packaging fits nicely in instrument case and does not take up too much space. MADE IN THE USA: Leveraging centuries of string-making experience and advanced computer-controlled winding technology, D’Addario Orchestral products are designed and manufactured in the USA to the most stringent quality controls in the industry.