【Premium Material】Hand Whistles are made from premium PVC material, , lightweight and long using time.
【Loud Sound】Coaches Whistles are mechanically constructed, loud and crisp, which can be heard from a distance, harder pressing and louder.
【Proper Size】Hand Whistles are in size 6.7cmx6.7cmx12.8cm/2.64inchx2.64inchx5.04inch, portable and easy to carry. great for various sports and outdoor activities.
【Easy To Use】Sports Whistles are easy to operate, and the harder pressing and louder lound, which can withstand frequent use.
【Wide Applications】Trainer Whistles are widely suitable for various sports and outdoor activities, like camping, hiking, boating and traveling, football and basketball game, etc.