The Fox Sonik Blast with CMG offers superior performance and comfort‎.‎ This safety whistle is ideal for large indoor stadiums‎,‎ outdoor arenas‎,‎ on site disaster management‎,‎ search & rescue‎,‎ and life guarding‎!‎ Advanced science and technology makes the Sonik Blast CMG Safety Pealess Whistle the most efficient whistle in its class‎!‎ Precise whistle chamber calibration assures pure frequency performance‎;‎ less effort‎,‎ crisper sound‎.‎ Flawless patented pealess whistle emits distinct louder pitch without a lot of effort‎.‎ Superior clear loud blast can be heard over long distances and intense ambient noise‎.‎ The Fox Cushioned Mouth Grip provides additional comfort and is perfect for reliably holding the whistle in the mouth in wet conditions‎.‎