This is a homemade violin mute. It reduces the sound during practice. It's larger than the Ottavo, a similar product, so it offers greater sound reduction. 【Features】 Not only does it provide a clear reduction in sound, but its effectiveness is also confirmed numerically through spectrum analysis. It attenuates the 1000-6000Hz range, which contains the overtones that cause noise, by 5-10dB, meaning the sound is less than half as loud. I always use this when practicing. ARTINO and similar mutes that sit on the bridge have high sound-dampening effects, but they have drawbacks such as: ・The contact point between the bow and strings is not visible when attached. ・The fundamental tone you want to hear during practice is inaudible. ・Being placed on the bridge alone makes them prone to falling off, and putting them in the case while attached can cause problems. ・They can leave marks or rubber stains on the bridge. ・They are heavy. I made this to address these issues. 【How to Attach】 Attach the two parts so they sandwich the bridge. They are secured with strong magnets, so when attaching them to the bridge, slide the smaller part from the side to avoid impacting the bridge. Basically, the side with the sticker should face the fingerboard. If the parts come into contact with the strings, you can usually fix it by reversing the orientation. 【Important Notes】 The dimensions of this product are approximately 42 x 21 x 5 mm and 56 x 26 x 5 mm. It should fit most 4/4 violins with a standard bridge height, but it may not be compatible with fractional violins. If the height to the E string is insufficient, please consider the Ottavo, a different product. Please excuse any minor manufacturing scratches. It may break if subjected to strong impacts. 【From Customer Reviews】 ・This is amazing!! ・Unlike metal mutes, the sound is reduced relatively naturally, which is great. ・It's good to be able to practice without worrying about the mute slipping or falling and damaging the instrument, or the anxiety of not seeing the contact point between the strings and the bow! (Please also take a look at other reviews)