Sports Whistle: Hand whistle is made of premium PVC, durable and lightweight. Great accessory for sports events Design: This whistle is loud, and lightweight, strong, practical and durable, This professional grade hand squeeze whistle can withstand frequent use. Mini Size: Small whistle, portable and easy to carry, suitable for home, and school sports, like football and basketball. Loud Sound: The dog handler's whistle produces a loud, crisp sound that can be heard from a distance. the harder you the louder the sound. It can be used by kids, teens, and adults. Versatile Use: Multipurpose whistle, suitable for camping, trekking, trekking, boating, traveling and other outdoor sports, also suitable for bird training. Specification: Material: PVC Size: approx. 12cmx6.5cm or 4.72inchx2.56inch Package Includes: 2Hand Squeeze Whistles Note: Please allow slightly errors due to manual measurement and different monitors.