Whether you're practicing or performing, Softone mutes improve sound quality and create a variety of tones for trumpet, tenor trombone, and bass trombone. Made of soft, non-toxic neoprene, Softone mutes are lightweight and easy to use. They won't stain or scratch your bell, and they fold up easily for storage. Designed by professional Conn® jazz trombonist Ira Nepus, Softone mutes will allow you to create an entirely new effect on the field, in the stands, or on the stage