Backpacking Whistle - Extremely Loud

It is not easy to find to buy a good Emergency Whistle for Outdoor Survival so I made my own Extremely Powerful Whistle ! You can use for your safety to scare animals or in case of emergency, have an awesome adventure and leave no trace. OBS!!! Be warned to protect your ears (this whistle is incredibly loud and has a randomized frequency - output about 135 decibels) Easy to print NO support needed!