DescriptionThese are professional whistles for referee and school athletic meetings, suitable for racing, running, horse racing, swimming, etc. High-class material guarantee long service time, enjoy your own tempo and honor. Can be the perfect gift for your friends who are the referees or instructors.Features-Color: Silver -Material: Stainless steel, nylon -Size: About 5.00X2.00X2.00cm/ 1.97X0.79X0.79inch - Made of premium stainless steel and safenylonmaterial, the whistle is durable and safe for long-lasting use.- Lightweight and equipped with a lanyard, it is easy to be hung on the neck and convenient to store.- It has a wide range of application, can be used as a referee whistle, sports whistle, training whistle.- With careful polishment, the whistle is smooth with no burr, safe for you to blow.- It also can function as asurvival whistle for outdoor camping, hiking, training and so on.