TWC-M17 Trpt Practice Studio : Good and flexible practice mute

Having used this mute for a while now, it has opened up a lot of opportunities for me to practice. The mute does its job well, the sound becomes very soft, there's a little bushing inside that constrains the sound even more, you can remove it and it will give you a little more airflow and a little more volume. Which is a neat feature. With the bushing inside, the airflow is noticeably affected, the resistance is fair for a practice mute, I struggle a bit in the higher octaves with this mute but overall I am happy with it. Though the rubber band is starting to dry out already and showing cracks, which is a little unfortunate but it still functions well after 2 years. All in all satisfactory.