This is a wood and fiberglass mute for tubas made by Ion Balu (yawn ball-oo). It features nine foam blocks in three sizes that attach with Velcro-style material. This way you can ensure a custom fit for your tuba.
This "Regular" model fits tubas fits most 4/4-5/4 tuba bells.
Choose the Balu XL size mute if you have a MW Fafner or 6/4 York-style tuba.
Available in several colors. The amber matches the inside of Disney Hall in DTLA.