The Gator Large Modular Mute Bag for Low Brass Players provides four large, thick cotton compartments designed to securely hold four common trombone mutes. It easily accommodates euphonium mutes. The bag features modular walls with touch-fasteners that allow for customized configurations. The modular walls plus exterior pockets allow you to store a wide range of accessories. The Large Modular Mute Bag is made of durable, weather-resistant fabric and has thick plush cotton walls.