PREMIUM QUALITY: 100% High-quality &food-grade stainless steel, safe, durable and sturdy to use, much better than the plastic. WIDE APPLICATIONS: Suitable for referees, coaches, training, instructors, sports, lifeguards, teachers, self-defense, survival, emergency, herding, training bird or dog, etc. CRISP AND LOUD: The sound is loud and crisp, you can quickly catch the crowed attention anytime you want. PACKAGE INCLUDE: the package includes 5 stainless steel whistles and 5 lanyards, much better to use anyone in anytime, and you can send different men you like. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.