Don't let danger sneak up on you - sound the alarm with your Nathan SaferRun Ripcord Siren Personal Alarm. This thumb-sized device provides extra protection when you're out exploring thanks to a loud 120dB alarm (as loud as an ambulance!) that sounds with just a pull of the tab. Easily store it away in your other Nathan products like the waist pack, phone carrier, or arm sleeve so it's always within reach.