Aluminium Alloy Whistle Survival Whistle Metal Whistle

Custom promotional survival whistle, made from aluminum alloy. Keychain design make it easily to be attached when you go to outside. Big size: 2.44″ length x 0.47″ diameter. Great item for any emergency, adventure, camping, mountaineering, hiking, sports, and so on. Many colors for your option. Your artwork can be laser engraved on it.