WIDE APPLICATIONS: Suitable for referees, coaches, training, instructors, sports, lifeguards, teachers, self-defense, survival, emergency, herding, training bird or dog, etc. PREMIUM QUALITY: High-quality ; food-grade stainless steel, safe, durable and sturdy to use, much better than the plastic. CRISP AND LOUD: The sound is loud and crisp, you can quickly catch the crowed attention anytime you want. FREE YOUR HANDS: Each whistle comes with a black lanyard, you can hang easily around your neck, or on a wall mount, help you free you hand. PACKAGE INCLUDE: the package includes 2 stainless steel whistles and 2 yellow lanyards, much better to use anyone in anytime, and you can send different men you like. Product color: silver Product size: 4.5*2*1.4cm