First we invented the best whistle. Then we made it more comfortable! FEATURES: The Classic CMG is cushioned to enhance the original Classic whistle The Cushioned Mouth Grip (CMG)’s thermoplastic material provides superior grip and protection for teeth Ideal for those who need to hold whistle in mouth for extended periods of time. Flawless, consistent and reliable The harder you blow, the louder the sound Pack contains 3 Classic CMG Whistles with 3 Lanyards 115DB Will be heard above ambient noise, loud crowds, the roar of engines, breaking waves, thundering gale-force winds, and up to a mile away. No moving parts to freeze, jam or deteriorate Chambers are designed to self-clear when submerged in water