Fox 40 cmg whistle finger grip blackbetter grip better control for comfort and protectionthe whistle is the same as the classic but has an added cushioned mouth grip cmg the classic cmg is ideal for those who need to hold the whistle in their mouth for extended periods of time from sports officials to lifeguards the innovative thermoplastic cmg provides superior grip and protection for your teethincludes a fox 40 finger grip for ease of usesound power 115 db