WSYUB 20pcs Black Whistles, Whistles Bulk with Lanyard Sports Loud Crisp Sound Whistles for Coach Referees Kids Training Emergency

["Package includes: 20 Pcs Black Plastic whistles with Black lanyard. These whistles are great for referees, coaches, training, teachers, survival, emergency, school, gym, etc.","LOUD CRISP SOUND WHISTLE: the sports whistle with good sonority, crisp and loud, easily up to 120dB.In addition, the whistle can be applied in many occasions to attract others' attention rapidly.","PREMIUM QUALITY WHISTLES: The whistles themselves are of good build quality. Made with thicken plastic, more durable than other plastic whistles. The balance of function, durability, and visibility is strong. Enough to withstand regular use by students and staff alike.","PERFECT FOR: Great whistles for Cub Scouts to use for hiking safety! Gave these whistles out in goodie bags; used for party; for school's referee and intramural sports program, PE teachers, coaches,and volunteers who need a good number of whistles","GOOD PACKAGE: Each whistle is packed separately and then neatly placed in the cardboard box. There is no need to worry about the lanyard getting tangled with each other."]