Free-blowing mutes provide excellent intonation. Available in a range of materials to achieve varied and distinctive sounds. Jo-Ral mutes incorporate unique cork pads and some feature felt caps to prevent scratching the instrument. Jo-Ral mutes also feature neoprene-enhanced composite cork pads that provide extra durability. The result is a more pliable cork that grips well and doesn't dry out, become brittle, or break off, so it lasts longer while easily accommodating fine adjustments for a perfect fit. Designed and tested to perform evenly in all registers.