Durable material: these emergency whistles are made of aluminum alloy and metal keychain, durable and non-toxic, not easy to break, fade or corrode, can serve you for a long time
Loud whistles: aluminum alloy outdoor survival whistle can make big and bright sound, which can be heard from a long distance, very useful for various emergency situations; During outdoor travel, you can confirm the direction for you, avoid getting lost, find companions, etc.
Dimension: these loud whistles measure approx. 4.7 cm/ 1.85 inches in length, diameter of the these whistles is approx. 0.9 cm/ 0.35 inches, suitable size for your use and storage
Matching key chain ring: each emergency whistle is equipped with a round key chain ring, compact and strong, elegant personality, can be hung on the key ring as an ornament, portable design, easy to carry around
Sufficient quantity: package includes 70 pieces of aluminum emergency whistle, don't worry about losing, enough for you to use in daily life, including 7 different colors, eye-catching and bright, easy to distinguish and find