1.Safe and durable: these plastic whistles are made of plastic, practical and durable, resistant to fading, not easy to break; The lanyard made of nylon, soft for you to hold or hang, you can use them for a long time 2.With lanyard: the whistle has a black appearance, and each whistle is equipped with a lanyard for your convenience, the lanyard made of nylon is durable and you can hang your whistle around your neck to avoid losing it when not in use, easy for you to carry and store 3.Wide applications: these whistles can be applied for a variety of sports events, such as running, hiking camping, tennis training and so on, it also suits for fan cheering and emergencies when living in the wild, convenient and practical for you 4.Make a crisp sound: each whistle has been carefully processed to produce a loud, crisp sound that you can use easily and effectively in any situation, the whistle is also a suitable prop on the party, which can create a pleasant atmosphere for the whole party, can make you attract more attention