Trusted by Professionals: Our Official Referee Whistle is trusted by professionals in D1 college sports, high school varsity events, and youth tournaments. Endorsed by traffic police officers, lifeguards, and coaches, it excels not only in sports but also in survival, emergency, school, gym, hiking, boat safety, and for law enforcement officials. Innovative 3-Chamber Design: Designed by officials, for officials! Our referee whistle boasts a cutting-edge three-chamber design with thick super plastic construction, ensuring durability and exceptional sound projection. It's the top choice for referees, coaches, and teachers. Command with confidence, even in the noisiest environments, thanks to its powerful 120 dB sound, audible up to a mile away. Cushioned Mouth Grip for Superior Comfort: We prioritize your comfort and safety during extended games and emergencies. That's why our whistle features a specially designed cushioned mouth grip material. It not only ensures a secure hold but also protects your teeth. Pealess Design: Bid farewell to whistles with moving parts that freeze or deteriorate. Our peal ess design guarantees reliability and longevity, ensuring it won't let you down when you need it most. Waterproof and Self-Clearing: Ready for any environment, our whistle self-clears when submerged in water. It's ideal for boat safety, survival situations, and emergencies. Whether you're hiking, on a boat, or facing the elements, trust our whistle as your lifeline.