Lightweight: Lightweight and portable, it is easy to use and carry. Weight: approx. 148g/5.2oz, Size(H x W): Approx. 24.5 x 12 cm/9.6 x 4.7 inches
Enrich the tone of the trombone -- It would not affect the tone but would give the trombone a sweet sound.
Reduce the volume -- Mute can effectively reduce the volume and allow you to practice without disturbing others.