Introducing the D'Addario Natural Rosin, a premium rosin made from all-natural ingredients that is suitable for use with both horsehair and synthetic hair bows. This high-quality rosin is perfect for students, thanks to its unique plastic channel which provides an easy grip, and it is conveniently packaged to fit perfectly into instrument cases. Experience the exceptional performance of D'Addario Natural Rosin, which offers great value for its superior quality. Made in the USA in NY, this rosin is a must-have for any violinist or violist looking to elevate their playing experience.