the Run Profiler is a SMART Insole that connects via Bluetooth through an APP that coaches you through your running/cycling activities in real time, helps measure and improve your performance while managing your fatigue and reducing your injury risk running features: 3D analysis of your stride (strike nature, propulsion level, stability) cycling features: 3D analysis of your movements (pedaling angle, power, pedaling time) 3 size adjustable package new in box, sealed 12655, 12645, 12653-0320-4