Best cost performance and amazing sound deadening performance. And it is a practical mute with a pleasant blinking and sound feel Reduces inconvenience vibrations and eliminates uneven sounds The main unit can be opened and closed to keep the interior clean Choose from two sizes of air hole by attaching or removing pipes. Allows you to practice with different resistance The center of the sound is made of the same line in any sound range, and the comfortable resistance makes it easier to feel the air vibration inside the instrument, and you can expect a relaxing effect to relieve your throat ASIN B0B76GMN3S Color Name レッド Item Weight 3.52 ounces Package Dimensions 5.2 x 4.17 x 4.06 inches