Home Mute, which recently expanded globally with the catchphrase "a small soundproof room" that can be used anywhere. It doesn't feel as constricting as when using a Silent Mute, and it offers excellent soundproofing with a natural blowing feel. I haven't used it much since I bought it, so it's in very good condition. It's a much better deal than buying new, so please consider purchasing it. Quoted from the official website below: Brass instruments like trumpets make it difficult to adjust the volume like electronic instruments, and require soundproofing measures for practicing at home. Conventional practice mutes have issues such as a different blowing feel and poor intonation, making it difficult to achieve a realistic playing experience. Brass Gear's "Home Mute" is a new type of practice mute for trumpets developed with the concept of a "small soundproof room." It significantly improves on previous issues and is designed to minimize changes in blowing feel and intonation. This allows for more comfortable and authentic practice without worrying about time or place. Retail price: ¥21,780 (tax included)