Feel safe and secure with our Whistle safety keychain, your ultimate personal safety device. An easy-to-use retractable carabiner keychain for belt loops and backpacks is a convenient accessory that allows you to securely attach items to your belt loops or backpacks. The LOUD Fox40 whistle is designed to produce a distinct and attention-grabbing sound that can travel long distances and cut through ambient noise. 24" retractable emergency whistle keychain extension reach with the ability to retract up to 4oz (about 5 Keys). By combining a whistle with a retractable keychain, you have a convenient way to carry your keys while also having a whistle readily available in case of an emergency or if you need to signal for help.