Butler Trombones’ cup/straight mutes are crafted from a blend of carbon fiber and 3D printed carbon fiber/nylon, providing both durability and versatility. The mute is infinitely adjustable, with the ability to move the cup and corks up or down using the velcro strips, while the cup can be removed for use as a straight mute. The mute performs exceptionally well across all registers, thanks in part to the cup’s flexible 3D printed carbon fiber/nylon construction, which makes it resistant to dents. At just 120 grams (4.2 oz) for the tenor and 170 grams (5.9 oz) for the bass, the mute is significantly lighter than aluminum mutes, reducing stress and enabling better musicality. As such, it is the ideal choice for any musician seeking a reliable and high-quality mute.