100 Pieces Emergency Whistle with Keychain Aluminum Whistle Survival Whistle Key Chain for Camping Hiking Boating Hunting Fishing Material:Our emergency whistle is made of alloy and metal keychain,not easy to break, fade or corrode Package:You will receive 100 pieces mix colored Aluminum Whistles Loud Whistles:The survival whistle can make big and bright sound, which can be heard from a long distance Wide Application: These whistles are suitable for camping, hiking, hunting, mountain climbing, boating and other outdoor sports activities, also suitable for referees, for coaches, lifeguards, dog training, etc After-Sale:If you received any items with problems,just send us a messsage,we will try our best to solve them for you.Hope you have a good shopping experience.