This product delivers the ideal muting feel that bassists seek, creating a warm tone that can't be achieved with anything else. It doesn't just suppress the sound value; it optimizes the timing, length, and strength of string vibration damping for each number of strings and product type. Muting techniques as a playing style have been difficult to use for fast phrases or certain music genres. However, with this item, the warm sound reminiscent of vintage sounds can be reproduced simply by using it, regardless of phrases, genres, or skill level. Also, the crisp sound is very pleasant, and just playing at home will allow you to rediscover the "joy of playing bass." Installation is very easy: simply crush the product firmly like an earplug and insert it under the strings before it regains its shape. After installation, moving it towards the bridge or neck allows you to create subtle nuances of gradation according to your preference. Please find your ideal sound. Size (approximate): Width 80mm x Height 28mm x Thickness 20mm ※ The white part may be discolored upon opening, but this is a product specification and does not affect the quality. Discoloration will also progress over time, especially when exposed to ultraviolet light. ※ Please check before purchasing to ensure that there is enough space to install it on your instrument. ※ Partial crushing immediately after opening, and hardening of the product in low-temperature environments, which increases the effect, are possible, but it will return to its original state at room temperature. ※ The degree of effect varies depending on the instrument's setup. ※ Because the logo is printed by hand one by one, there may be individual variations in density, blurring, and rubbing in the printed area, unlike the image. ※ Instruments and equipment included in the images are not included in the product. ※ Please be sure to refer to the instruction manual at the end of the product image or on the back of the product package for how to use it. We offer two types of lineups, sweet and better, for each sound character, available for 4-string and 5-string basses. Please see each product page. Although we have made detailed designs specifically for 4-string and 5-string basses, they can be used regardless of the difference in string spacing.