Review on Hipat Whistle, 2 Packs Plastic Sports Whistles With Lanyard, Loud Crisp Sound Whistle Ideal For Coaches, Referees, And Officials by Brandon Hunter

It's a set of cheap whistles, perfect for youth (<12 years) sports. The ball will sometimes stick in place, and when that happens you get a steady constant tone rather than the satisfying vibrato that most are accustomed to. To be clear, when that happens it's just as loud as it always is. Lanyard is very whimpy, but you can attach the whistle to whatever you like.Still give it 5 stars because of the price point, it's a good value. It gets the job done without having to spend $20+ on a premium quality metal whistle.