Double-Tube Metal Signal Whistle with Key Ring, 3 Pack

A compact signal whistle to hang on a backpack strap or keychain so you can call for attention on trails, at camp or during group outings. This pack contains three dark-finish metal whistles, each with a double-tube body and a split key ring with a short chain, as shown. The supplier gives no dimensions; the photo shows a slim, key-sized whistle. Having three makes it easy to share among family members or a hiking group.