Material: aluminum. The straight trumpet mute is made from high-purity spun aluminum with a smooth finish and precision workmanship, suitable for jazz and concert band use. Benefits and features - Sound quality and projection: Significantly improves tone by using the full vibrating air column. It opens throat spaces when playing in the deep register, helping you achieve a fuller sound with reduced disturbance to others. - Quiet practice and living situations: Practicing with this mute minimizes disruption to family, neighbors and pets while still delivering a clear, usable tone. - Durable, portable pad: Equipped with a high quality Neoperen reinforced composite cork pad for a secure seal, durable, lightweight and easy to transport. - Trusted manufacture: Made by a professional instrument accessory manufacturer, ensuring reliability and consistent performance. Adaptability and use - Compatibility: Fits all kinds of trumpets. You can adjust the distance to achieve different pronunciation effects and response. Use scenarios - Home practice: Practice late at night or in common living spaces with less noise for considerate neighbors and family. - Rehearsals and performances: Use in jazz or concert band settings to achieve a controlled mute tone with clear projection. - Studio or recording sessions: Provides a consistent mute tone and reliable response for precise recording takes. In short, this straight trumpet mute combines aluminum construction, a durable Neoperen cork pad, and universal compatibility to improve tone and control while keeping practice and performances neighbor-friendly.