This might be the best looking jacket whistle you have ever seen. Sleek and space-grade it is sure to aesthetically compliment any jacket or pack used in the backcountry. 
 
Ensure group-communication and emergency-preparedness in the backcountry without compromising on style when everything is okay. 
 
Titanium is anti-bacterial and Indestructible, it is the perfect material for an emergency whistle built to last the ages. The whistle feels nice to the touch and doubles as a zipper pull. 
 
-Very loud
-2.125 inches long
-0.25 inch diameter
-4 grams total weight