aDescriptionThese whistles are made of evnironmental friendly material, and durable. designed to give you the best chance for in a disaster or lift- threatening situation. It also can be used as whistle, compass, mirror, magnifier, mini storage case, LED flashlight or when you lost direction and need rescuing in wild.Features- Color:Assorted Color.- Material: ABS.- Size: About10. 00X2. 80X2. 80cm/3. 93X1. 10X1. 10inch.- High- decibel whistles have functions such as gathering, confirming orientation, and calling for help;- The direction of the built- in compass is more stable than original one.- The can help you monitor the ambient temperature to sudden changes in temperature.- Suitable for camping, hiking, mountain climbing, cross country and other outdoor activities.- Come with rope for easy pendant hanging supplies.- 7 in 1 outdoor whistles for you cmaping or any outdoor acticity. A convenient and practical for your friends and family. Package Including 3 x whistles