Product name:Dolphin Whistle Product size about : One size Product color: As shown in the figure Product material:ABS product features: 1. Ultra-Loud Whistle: This sports whistle adopts a ball-free design and has strong penetrating power,it is designed for referees, fans and sports teachers, featuring an ultra-loud and high-pitched sound that can be easily heard over long distances, ensuring clear communication during games and emergencies. 2.Multipurpose Use: Whether used for basketball games,emergency situations, or water sports activities, this whistle is versatile and reliable, serving as an essential tool for signaling, communication, and safety measures. 3.ABS Construction: Made from ABS food grade materialmaterials, this whistle is long-lasting, capable of withstanding frequent use and harsh outdoor conditions without compromising its performance. 4.Professional Grade: Designed for professional use, this whistle meets the standards required by referees and lifeguards, ensuring optimal sound projection and reliability in various sports and emergency scenarios. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Package includes: 1 pc Dolphin Whistle 1 pc Whistle Storage Box 3 pcs Hygienic mouthguard 1 pc Hand Strap 1 pc Lanyard