Item Type: Sport Whistle_x000D_ Material: Eco friendly composite material 1Unique Design: Adopts unique non core design makes blowing more labor saving, strong penetrating, and the sound quality is clear and loud. 2Compact Design: The whistle overall design is lightweight, compact, and portable, does not occupy much place, and is suitable for carrying around. 3Material: Made of premium eco friendly composite material, it is durable, not easy to fade, and the corners are round and do not scratch the skin. 4Anti Slip: The whistle side has a non slip and easy to grasp design, making it more convenient, and the color block design makes it more unique. 5Application: The sport whistle is suitable for basketball, football and other ball sports, and physical education, training, outdoor activities.1 x_x000D_ _x000D_ Sport Whistle