Fox 40 Sonik Blast CMG Official with Finger Grip . Authentic and original, the name Fox 40 has become synonymous with innovating and producing the best quality, most trusted pealess whistles in the world. And for a good reason. Fox 40 whistles come from real people, real referees, real heritage, and real passion. That cannot be duplicated. For today's officials it's about using the real thing. You expect the best out for your performance and you expect the best from your whistle too.

Provides additional comfort. Distinct louder pitched whistle provides a much powerful sound, without a lot of effort. Easily heard over the crowds. Ideal for large outdoor arenas with big crowds and extensive ambient noise. Reliably hold the whistle in mouth or fingers in wet conditions.