Points:1、High-Impact Material: The sports training whistle is 100% made of high-impact ABS material, it owns 100% moisture resistance.2、No Obstructing Sound: The football referee finger whistle features no peeling design, no moving parts, no obstructing sound, no paper , cracking or freezing.3、Widely Used: Suitable for large areas, such as football fields, racing fields, airport sidewalks, construction sites and any situation that requires very noisy signal equipment.4、Safe and Odoess: The comfortable mouth grip of the whistle is made of food-grade ABS, which is tasteless, non-carcinogenic and can provide protection for your teeth and lips.5、Better Performance: The sports training whistle can eliminate environmental noise more effectively than traditional whistle.Specification:Size:seepictureMaterial:ABSApplication:basketball,footballandotherballsports,physicaleducation,training,outdooractivitiesPackingList: FingerWhistle*1(shippedinrandomcolor)Notes: Duetothelightingeffectsandshootingangles,thereiscolordifferenceintheproduct,pleaseunderstand. Duetomanualmeasurement,thereisatoleranceintheproductsize.