The Adore Pro Cello Low Dust Natural Dark Rosin is made with all-natural materials, which is obtained from selected pine trees and purified by ultra filtration to obtain high purity rosin. We constantly insist on high standard of material and workmanship of the rosin can protect the rosin users against the harm. The secondary extraction process improves the purity of rosin, reduces noise and makes the sound more beautiful. It is non-toxic and harmless. Without rosin applied to the bow hair, there is no friction between the bow and the strings. These rosins, which are passed through the stringent quality control, has the double advantage of strong adhesion and high viscosity, the powder of which is so smooth and fine that it is easy to maximize the inner range of a Cello. Its Compact and attractive packaging fits nicely in instrument case and does not take up too much space. Use this accessory to help the violin to produce pure and moving sound with no noise while performing or learning to play Cello. Rosin is suitable for all kinds of horsehair and synthetic hair bowed string instruments and essential to any musician who plays a fretted string instrument such as Violin and Cello. Suitable for Cellist practitioner, classroom, teacher, students, beginners or kids.