Outdoor Survival Whistle Camping Hiking Rescue Emergency Whistle Diving Football Basketball Match Whistle Anti loss Clip

2. Whistle anti slip design. You don't need to hold it with your hands, and you don't have to worry about the airflow blowing the whistle out.

3. It's effortless to make a sound. When seeking survival or help, pay attention to preserving your physical strength. A good survival whistle can easily make a sound. Some products on the market may sound loud, but they are not easy to produce sound.