Nathan SaferRun Ripcord Siren Personal Alarm Trail This footbed is designed to

This footbed is designed to work in concert with the biodynamics of the body by keeping it in a neutral balanced position and evenly distributing pressure to reduce foot fatigue

Size 1 fits torso circumference at chest of 25"–35"

torso-mounted wearable wonder—the most comfortable

Liner: DriLayer 92% Polyester

Nathan SaferRun Ripcord Siren Personal Alarm Trail This footbed is designed toThe SaferRun Ripcord Siren Personal Alarm is a thumb sized device that blasts sound in case of emergency. A simple pull of a tab will sound a 120dB alarm, as loud as an ambulance siren and audible from over 600 ft. away. This tiny alarm system is a deterrent and can alert others in case a runner or walker is in distress. Compatible with core Nathan products (waist packs, armbands, phone carriers) with designated storage for the SaferRun Ripcord Siren.