The Humes & Berg Trombone Straight Mute Stone Lined, East Chicago Mute is a high-quality accessory designed specifically for trombones. Made of durable aluminum and copper materials, this mute features a unique stone lining for added resonance and sound quality. With a sleek satin and matte finish, this multicolor mute is perfect for trombone players looking to enhance their sound and performance. The Humes & Berg brand is known for producing reliable and top-notch brass instrument accessories, making this mute a trusted choice for musicians.